Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
3474 vulnerabilities reference this CWE, most recent first.
CVE-2026-115455 (GCVE-0-2026-115455)
Vulnerability from cvelistv5 – Published: 2026-10-30 07:13 – Updated: 2026-11-05 16:23
VLAI
EPSS
VEX
Title
Gcc: stack overflow in std::bitset on libstdc++
Summary
A flaw was found in GCC libstdc++. When an application extracts data into a bitset from a wide-character stream, internal stack memory allocation fails to properly account for character size and alignment. An attacker capable of supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS).
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 02:04 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
redhat
CNA
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:94989 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-115455 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2562933 | issue-trackingx_refsource_REDHAT |
| https://gcc.gnu.org/cgit/gcc/commit/?id=5d419c69c… |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
13.5.0-0.4.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/a:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/a:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/a:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 5 |
cpe:/a:redhat:openshift:5
|
Date Public
2026-10-28 15:46
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CVE-2026-115393 (GCVE-0-2026-115393)
Vulnerability from cvelistv5 – Published: 2026-10-22 19:13 – Updated: 2026-10-29 12:16
VLAI
EPSS
VEX
Title
Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 Cross-Engine Type Confusion
Summary
Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion vulnerability because several Store APIs fail to validate that objects belong to the Store's Engine. Embedders mixing objects between Engines via Instance::new, StructRefPre::new, or Tag::new can trigger trampoline signature mismatches causing out-of-bounds stack writes, GC heap corruption, or panics.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 12:13 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | vendor-advisory |
| https://www.vulncheck.com/advisories/wasmtime-bef… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
0 , < 24.0.12
(semver)
Unaffected: 24.0.12 (semver) Affected: 25.0.0 , < 36.0.13 (semver) Unaffected: 36.0.13 (semver) Affected: 37.0.0 , < 46.0.2 (semver) Unaffected: 46.0.2 (semver) Affected: 47.0.0 , < 47.0.3 (semver) Unaffected: 47.0.3 (semver) cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* |
Date Public
2026-07-31 00:00
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CVE-2026-114690 (GCVE-0-2026-114690)
Vulnerability from cvelistv5 – Published: 2026-10-30 07:13 – Updated: 2026-11-06 07:40
VLAI
EPSS
VEX
Title
Gcc: confirmed out-of-bounds read/write in libstdc++ parallel `std
Summary
A flaw was found in GCC. An out-of-bounds memory access vulnerability exists in the libstdc++ parallel search implementation due to an undersized internal buffer. A local attacker can exploit this flaw by providing crafted search data to an application compiled with parallel mode, causing the process to crash and leading to a Denial of Service (DoS).
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 15:20 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
redhat
CNA
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-114690 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2478652 | issue-trackingx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/a:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/a:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/a:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 5 |
cpe:/a:redhat:openshift:5
|
Date Public
2026-10-28 19:11
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CVE-2026-114550 (GCVE-0-2026-114550)
Vulnerability from cvelistv5 – Published: 2026-11-03 23:47 – Updated: 2026-11-06 18:55
VLAI
EPSS
VEX
Title
libwebsockets MQTT Protocol PUBACK Packet Handling Out-Of-Bounds Write Remote Code Execution Vulnerability
Summary
libwebsockets MQTT Protocol PUBACK Packet Handling Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of PUBACK packets. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31039.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 18:54 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
zdi
CNA
References
2 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
| https://github.com/warmcat/libwebsockets/commit/c… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| libwebsockets | libwebsockets |
Affected:
b4b5aed3903eaff09cd76a410f69bbe5dff66f8e
|
Date Public
2026-10-26 19:15
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CVE-2026-114458 (GCVE-0-2026-114458)
Vulnerability from cvelistv5 – Published: 2026-10-22 06:37 – Updated: 2026-10-26 19:38
VLAI
EPSS
VEX
Title
Mod_qos: undersized connection-monitor scratch array permits heap buffer overflow
Summary
A flaw was found in mod_qos. An unauthenticated remote attacker can cause a Denial of Service (DoS) by maintaining numerous concurrent low-rate connections to a target server. When connection rate monitoring is active, the module fails to verify array boundaries when recording client IP addresses, allowing more connection records to be added than the allocated buffer can hold. This issue leads to heap memory corruption, which can crash the web server process.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 19:24 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
fedora
CNA
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-114458 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2558393 | issue-trackingx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| pbuchbinder | mod_qos |
Affected:
11.74
(custom)
Affected: 11.76 (custom) Affected: 11.79 (custom) |
Date Public
2026-10-21 14:45
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CVE-2026-113780 (GCVE-0-2026-113780)
Vulnerability from cvelistv5 – Published: 2026-11-04 19:04 – Updated: 2026-11-05 19:10
VLAI
EPSS
VEX
Title
ESF-IDF: Unvalidated Stack Pointer at the ESP-TEE Privilege-Switch Boundary
Summary
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.5.5 until 5.5.6, 6.0.4, and 6.1.1, the esp_tee trap entry in esp_tee_vectors_plic.S and esp_tee_vectors_clic.S saves a caller-controlled register frame through the REE-supplied stack pointer before switching to the trusted TEE stack or validating the pointer. A local unprivileged REE application can direct this machine-mode write into TEE-exclusive memory on ESP32-C5, ESP32-C6, ESP32-C61, and ESP32-H2 devices, breaking the REE/TEE isolation boundary and potentially corrupting TEE control-flow data for code execution, denial of service, or system crashes. Both secure-service ecall and interrupt entry paths contain the vulnerable ordering. This issue is fixed in version 5.5.6 and is scheduled to be fixed in versions 6.0.4 and 6.1.1.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 19:10 UTC
Assigner
GitHub_M
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/espressif/esp-idf/security/adv… | x_refsource_CONFIRM |
| https://github.com/espressif/esp-idf/commit/77376… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/acb7d… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/b85a7… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/dabd3… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/releases/tag… | x_refsource_MISC |
Impacted products
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CVE-2026-113679 (GCVE-0-2026-113679)
Vulnerability from cvelistv5 – Published: 2026-10-20 15:40 – Updated: 2026-10-20 16:21
VLAI
EPSS
VEX
Title
HarfBuzz 8.0.0 through 14.6.0 Out-of-Bounds Write via WebAssembly font_glyph_to_string
Summary
HarfBuzz 8.0.0 through 14.6.0 contains an out-of-bounds write vulnerability in the experimental WebAssembly shaper because the font_glyph_to_string import has a wrong WAMR signature. Attackers can supply a crafted font whose wasm module places the output buffer near linear memory's end, writing glyph-name bytes into host memory to crash or corrupt applications.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 16:21 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/harfbuzz/harfbuzz/pull/6414 | patchissue-tracking |
| https://github.com/harfbuzz/harfbuzz/commit/5e821… | patch |
| https://github.com/harfbuzz/harfbuzz/blob/14.6.0/… | technical-description |
| https://github.com/harfbuzz/harfbuzz/blob/14.6.0/… | technical-description |
| https://www.vulncheck.com/advisories/harfbuzz-8.0… | third-party-advisory |
Impacted products
Date Public
2026-10-19 21:41
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CVE-2026-112709 (GCVE-0-2026-112709)
Vulnerability from cvelistv5 – Published: 2026-10-27 15:52 – Updated: 2026-11-04 20:26
VLAI
EPSS
VEX
Title
Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution
Summary
A heap-based buffer overflow vulnerability in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition and potentially execute arbitrary code by returning a specially crafted response.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 18:46 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-112709 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.1 , < 2026.4
(custom)
Affected: 12.0 , < 12.12.4 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
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CVE-2026-112398 (GCVE-0-2026-112398)
Vulnerability from cvelistv5 – Published: 2026-10-19 21:07 – Updated: 2026-10-22 21:06
VLAI
EPSS
VEX
Title
Pillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code execution
Summary
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's FlashPix JPEG-tile decoder can write decoded scanlines beyond the allocated tile buffer. FlashPix (FPX) JPEG decoding selects raw mode LA with two bytes per pixel, while an unrecognized JPEG mode can be decoded as JCS_UNKNOWN with four components, causing ImagingJpegDecode to write four-component scanlines into the two-byte tile buffer. An attacker can supply a crafted OLE2 FlashPix file to an application with the optional olefile dependency installed that opens or thumbnails untrusted input. This can corrupt heap memory and may allow arbitrary code execution. This issue is fixed in version 13.0.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-22 21:05 UTC
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/python-pillow/Pillow/security/… | x_refsource_CONFIRM |
| https://github.com/python-pillow/Pillow/commit/24… | x_refsource_MISC |
| https://github.com/python-pillow/Pillow/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| python-pillow | Pillow |
Affected:
< 13.0.0
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CVE-2026-112397 (GCVE-0-2026-112397)
Vulnerability from cvelistv5 – Published: 2026-10-19 21:17 – Updated: 2026-10-19 21:38
VLAI
EPSS
VEX
Title
Pillow: Out-of-bounds access in _imagingmorph on a zero-width image
Summary
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 21:37 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/python-pillow/Pillow/security/… | x_refsource_CONFIRM |
| https://github.com/python-pillow/Pillow/commit/18… | x_refsource_MISC |
| https://github.com/python-pillow/Pillow/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| python-pillow | Pillow |
Affected:
< 13.0.0
|
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"url": "https://github.com/python-pillow/Pillow/releases/tag/13.0.0"
}
],
"source": {
"advisory": "GHSA-58r4-6rv3-gfh8",
"discovery": "UNKNOWN"
},
"title": "Pillow: Out-of-bounds access in _imagingmorph on a zero-width image"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-112397",
"datePublished": "2026-10-19T21:17:35.684Z",
"dateReserved": "2026-10-19T16:58:51.959Z",
"dateUpdated": "2026-10-19T21:38:18.176Z",
"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.