Common Weakness Enumeration

CWE-787

Allowed-with-Review

Out-of-bounds Write

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product writes data past the end, or before the beginning, of the intended buffer.

3477 vulnerabilities reference this CWE, most recent first.

CVE-2026-58049 (GCVE-0-2026-58049)

Vulnerability from cvelistv5 – Published: 2026-06-28 01:32 – Updated: 2026-09-01 12:04
VLAI
Title
FFmpeg - Out-of-Bounds Write in RASC Decoder decode_dlta()
Summary
FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXT_LINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A crafted media stream using the RASC FourCC, decoded by libavcodec, triggers a bitstream-controlled out-of-bounds heap write and adjacent out-of-bounds read, leading to memory corruption.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 13:52 UTC
CWE
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
FFmpeg FFmpeg Affected: 0 , ≤ bcd2c69e087a09b07cf45c6bd2428ee1ccb2925c (git)
    cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
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Red Hat Red Hat Enterprise Linux AI 3.0 for RHEL 9 Unaffected: 0:6.1.6-3.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.0::el9
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Red Hat Red Hat Enterprise Linux AI 3.2 for RHEL 9 Unaffected: 0:6.1.6-3.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.2::el9
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Red Hat Red Hat Enterprise Linux AI 3.3 for RHEL 9 Unaffected: 0:6.1.6-3.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.3::el9
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Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 Unaffected: 0:6.1.6-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.5::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1786611800 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787076778 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787077779 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787076481 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat AI Inference Server     cpe:/a:redhat:ai_inference_server:3
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Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3     cpe:/a:redhat:enterprise_linux_ai:3
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Date Public
2026-06-26 00:00
Credits
ashdfrkl
Show details on NVD website
To clipboard 

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CVE-2026-57876 (GCVE-0-2026-57876)

Vulnerability from cvelistv5 – Published: 2026-06-26 07:17 – Updated: 2026-06-26 15:40
VLAI
Title
GV-LPC2011/LPC2211 - unauthorized out-of-bounds writing vulnerability (onvif.cgi)
Summary
An unauthenticated out-of-bounds write vulnerability exists in onvif.cgi in GeoVision GV-LPC2011 and GV-LPC2211 V1.12 and earlier. The vulnerability is caused by insufficient bounds checking when processing HTTP request body data. A remote attacker may exploit this vulnerability by sending a crafted request with excessive input, causing memory corruption and resulting in a denial of service.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 15:39 UTC
CWE
Assigner
GV CNA
References
Impacted products
Vendor Product Version
GeoVision Inc. GV-LPCLPC2011/2211 Affected: 1.12
Unaffected: 1.13
    cpe:2.3:a:geovision_inc.:gv-lpclpc2011_2211:1.12:*:linux:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-26 02:55
Credits
Jincheng Wang (@winmt), Professor Le Yu of Nanjing University of Posts and Telecommunications, and Professor Xiapu Luo of The Hong Kong Polytechnic University has reported:
Show details on NVD website
To clipboard 

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CVE-2026-57455 (GCVE-0-2026-57455)

Vulnerability from cvelistv5 – Published: 2026-06-25 15:22 – Updated: 2026-06-25 23:30
VLAI
Title
Vim: Stack out-of-bounds write in `spell_soundfold_sofo()` via an over-length `soundfold()` argument
Summary
Vim is an open source, command line text editor. Prior to 9.2.0698, the single-byte branch of spell_soundfold_sofo() in src/spell.c translates a word through a spell file's SOFO (sound-folding) byte map into a caller-owned result buffer. Its copy loop advances the output index ri with no upper bound and terminates only on the input NUL, writing one byte per input byte into the MAXWLEN-element stack buffer the caller provides. A word longer than MAXWLEN, passed to soundfold() (or reached via sound-based spell suggestion) while a SOFO-based spell language is active, therefore writes past the end of that buffer. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0698.
Severity
4 (Medium)
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 23:29 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
vim vim Affected: < 9.2.0698
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-57260 (GCVE-0-2026-57260)

Vulnerability from cvelistv5 – Published: 2026-07-08 07:35 – Updated: 2026-07-08 12:47
VLAI
Title
Security vulnerability in Foxit PDF Editor/Reader — U3D Adobe Mesh Decompression (Type Confusion / Invalid Pointer Dereference)
Summary
The application opened a PDF file containing an abnormal Unity 3D object. During parsing, the application incorrectly resolved a portion of the abnormal object as a pointer and used it as a valid address, ultimately causing the application to crash.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 12:47 UTC
CWE
Assigner
Foxit CNA
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier
Affected: Versions 13.2.4 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2026.1.1 and earlier
Affected: Versions 14.0.3 and earlier
Affected: Versions 13.2.3 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2026.1.1 and earlier
Create a notification for this product.
Credits
Liang Zhu
Show details on NVD website
To clipboard 

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CVE-2026-57201 (GCVE-0-2026-57201)

Vulnerability from cvelistv5 – Published: 2026-10-27 16:56 – Updated: 2026-10-30 20:19
VLAI
Title
Asterisk: Stack Buffer Overflow in H.323 ooTrace() via Unbounded vsprintf into Fixed 2048-byte Buffer
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a stack buffer overflow in the H.323 `ooTrace()` trace-logging function can occur when unbounded `vsprintf` writes into a fixed `2048-byte buffer`. A remote attacker may send a carefully crafted packet that causes the Asterisk process to crash. The `chan_ooh323` addon channel driver must be explicitly compiled and installed, which is not the default, and its port must be publicly reachable. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 20:19 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-57199 (GCVE-0-2026-57199)

Vulnerability from cvelistv5 – Published: 2026-10-27 21:52 – Updated: 2026-11-03 13:58
VLAI
Title
Asterisk: Asterisk app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, `app_sms.c` copies externally controlled `SMS` lengths into `fixed in-struct buffers` without sufficient bounds checks, allowing an attacker to corrupt memory or crash Asterisk. The administrator must explicitly use the `SMS` dialplan application, which is useful when routing calls to or from `analog devices`, and must not have ensured that data passed to the application is valid. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 13:56 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
Create a notification for this product.
Show details on NVD website
To clipboard 

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                "role": "CISA Coordinator",
                "timestamp": "2026-11-03T13:56:54.881874Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-03T13:58:43.338Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "vendor": "asterisk",
          "versions": [
            {
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              "version": "\u003c 20.20.1"
            },
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            },
            {
              "status": "affected",
              "version": "\u003e= 22.0.0-pre1, \u003c 22.10.1"
            },
            {
              "status": "affected",
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        },
        {
          "product": "certified-asterisk",
          "vendor": "asterisk",
          "versions": [
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              "version": "\u003c 20.7-cert11"
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      ],
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            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
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            "baseScore": 2.3,
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        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1",
          "tags": [
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        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11",
          "tags": [
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          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3",
          "tags": [
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          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
        },
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          "name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1",
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        "discovery": "UNKNOWN"
      },
      "title": "Asterisk: Asterisk app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers"
    }
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    "cveId": "CVE-2026-57199",
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    "dateReserved": "2026-06-24T02:00:46.800Z",
    "dateUpdated": "2026-11-03T13:58:43.338Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-57197 (GCVE-0-2026-57197)

Vulnerability from cvelistv5 – Published: 2026-10-27 16:35 – Updated: 2026-11-02 19:27
VLAI
Title
Asterisk: Heap Buffer Overflow in OGG/Speex File Playback (format_ogg_speex)
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `memcpy` of `OGG/Speex` packet data in `format_ogg_speex` can cause a heap buffer overflow and crash Asterisk when reading a file containing corrupted Speex audio. The attacker must create the file and make it available to Asterisk either through sufficiently elevated privileges or by convincing an Asterisk administrator to make it available. Asterisk must also be configured to play that file. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 19:26 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-57194 (GCVE-0-2026-57194)

Vulnerability from cvelistv5 – Published: 2026-10-27 16:52 – Updated: 2026-11-02 19:31
VLAI
Title
Asterisk: chan_unistim DIALPAGE digit handling can overflow phone_number and crash Asterisk
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an out-of-bounds write in `chan_unistim` `DIALPAGE` digit handling can overflow the `phone_number` field and crash Asterisk when an attacker sends a carefully crafted incoming request packet. The `chan_unistim` module must be loaded and configured with a valid `UNISTIM UDP port` that the attacker can reach. The attacker must register as a configured `phone MAC`, or the deployment must have an equivalent `production/autoprovisioning` path that allows the client to reach the main page. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 19:31 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
Create a notification for this product.
Show details on NVD website
To clipboard 

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          "product": "certified-asterisk",
          "vendor": "asterisk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.7-cert11"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.8-cert1-pre1, \u003c 22.8-cert3"
            }
          ]
        }
      ],
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          "lang": "en",
          "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an out-of-bounds write in `chan_unistim` `DIALPAGE` digit handling can overflow the `phone_number` field and crash Asterisk when an attacker sends a carefully crafted incoming request packet. The `chan_unistim` module must be loaded and configured with a valid `UNISTIM UDP port` that the attacker can reach. The attacker must register as a configured `phone MAC`, or the deployment must have an equivalent `production/autoprovisioning` path that allows the client to reach the main page. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "url": "https://github.com/asterisk/asterisk/commit/fc3a1cb3c386c962bfca8cd9d533d1390d4ad933"
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          "name": "https://github.com/asterisk/asterisk/commit/ff65e4b0867bee12cdcb3a6219b976ee7ee08963",
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          "url": "https://github.com/asterisk/asterisk/commit/ff65e4b0867bee12cdcb3a6219b976ee7ee08963"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/20.20.1",
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        },
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          "tags": [
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        },
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          "name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1",
          "tags": [
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          "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
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      ],
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        "discovery": "UNKNOWN"
      },
      "title": "Asterisk: chan_unistim DIALPAGE digit handling can overflow phone_number and crash Asterisk"
    }
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57194",
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    "dateReserved": "2026-06-24T02:00:46.800Z",
    "dateUpdated": "2026-11-02T19:31:49.547Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

CVE-2026-57192 (GCVE-0-2026-57192)

Vulnerability from cvelistv5 – Published: 2026-10-27 21:25 – Updated: 2026-11-03 12:15
VLAI
Title
Asterisk: Out-of-Bounds Write in Codec2 Decoder Due to Floor/Ceil Sample Count Mismatch
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may cause a heap buffer overflow through an out-of-bounds write in the `Codec2` decoder caused by a `floor/ceil sample-count mismatch`. The `codec_codec2` module must be loaded and `Codec2` must be configured on the attacked endpoint. The attacker must pass SIP authentication by username/password or `source IP address matching`, establish a call using `Codec2`, and send carefully crafted `Codec2` audio packets. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 12:14 UTC
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-131 - Incorrect Calculation of Buffer Size
  • CWE-787 - Out-of-bounds Write
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
Create a notification for this product.
Show details on NVD website
To clipboard 

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          "tags": [
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}

CVE-2026-57191 (GCVE-0-2026-57191)

Vulnerability from cvelistv5 – Published: 2026-10-27 21:32 – Updated: 2026-11-02 19:45
VLAI
Title
Asterisk: Stack buffer overflow in MWI NOTIFY Message-Account parsing
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `sscanf` in `res_pjsip_pubsub` when parsing the `MWI NOTIFY` `Message-Account` field may allow an unauthenticated attacker to send a carefully crafted packet that causes a stack buffer overflow and corrupts the underlying transport, permanently disabling all SIP functionality. An Asterisk restart is required to restore full operation. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 19:45 UTC
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-787 - Out-of-bounds Write
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
Create a notification for this product.
Show details on NVD website
To clipboard 

{
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        {
          "lang": "en",
          "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `sscanf` in `res_pjsip_pubsub` when parsing the `MWI NOTIFY` `Message-Account` field may allow an unauthenticated attacker to send a carefully crafted packet that causes a stack buffer overflow and corrupts the underlying transport, permanently disabling all SIP functionality. An Asterisk restart is required to restore full operation. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T21:32:23.714Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-589g-qgf8-m6mx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-589g-qgf8-m6mx"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/0e89514084490070c5ecee419ec5ee37b7c49528",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/0e89514084490070c5ecee419ec5ee37b7c49528"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/647b35c3cfd4a2cc3b1fb7560b085feba5c24b4b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/647b35c3cfd4a2cc3b1fb7560b085feba5c24b4b"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/7a1ffcdf38cc76d1c4eae51651667f3fd4548ab0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/7a1ffcdf38cc76d1c4eae51651667f3fd4548ab0"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/b4be3bd67ce4ac35b94fbfa860cdd9e1c906610b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/b4be3bd67ce4ac35b94fbfa860cdd9e1c906610b"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/b5281828dad7d44658439ba6393fe6be3328a4bd",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/b5281828dad7d44658439ba6393fe6be3328a4bd"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/dca516f6d895e8867d48fa56b6ce7f05b6f7457a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/dca516f6d895e8867d48fa56b6ce7f05b6f7457a"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/ee1b66a5e40733ba0b9fad7fc4d032cabbe1dd75",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/ee1b66a5e40733ba0b9fad7fc4d032cabbe1dd75"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/20.20.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/21.12.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/22.10.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
        }
      ],
      "source": {
        "advisory": "GHSA-589g-qgf8-m6mx",
        "discovery": "UNKNOWN"
      },
      "title": "Asterisk: Stack buffer overflow in MWI NOTIFY Message-Account parsing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57191",
    "datePublished": "2026-10-27T21:32:23.714Z",
    "dateReserved": "2026-06-24T02:00:46.799Z",
    "dateUpdated": "2026-11-02T19:45:36.758Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation MIT-3
Requirements

Strategy: Language Selection

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
  • Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Architecture and Design

Strategy: Libraries or Frameworks

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Operation Build and Compilation

Strategy: Environment Hardening

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
Implementation
  • Consider adhering to the following rules when allocating and managing an application's memory:
  • Double check that the buffer is as large as specified.
  • When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
  • Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
  • If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Operation Build and Compilation

Strategy: Environment Hardening

  • Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Operation

Strategy: Environment Hardening

  • Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
  • For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Implementation

Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.

No CAPEC attack patterns related to this CWE.

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