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.
3475 vulnerabilities reference this CWE, most recent first.
CVE-2026-93866 (GCVE-0-2026-93866)
Vulnerability from cvelistv5 – Published: 2026-10-27 15:52 – Updated: 2026-11-04 20:26
VLAI
EPSS
VEX
Title
Fireware OS Pre-Authentication Integer Overflow in Access Portal Allows Out-of-Bounds Write
Summary
An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 18:45 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-93866 | 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:
12.0 , < 12.5.22
(custom)
|
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CVE-2026-93862 (GCVE-0-2026-93862)
Vulnerability from cvelistv5 – Published: 2026-10-27 15:52 – Updated: 2026-10-29 01:52
VLAI
EPSS
VEX
Title
Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service
Summary
An out-of-bounds read vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to repeatedly crash the firewall's cluster synchronization process by sending specially crafted network traffic, resulting in a sustained denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 01:39 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-93862 | 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:
12.0 , < 12.5.22
(custom)
|
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CVE-2026-93857 (GCVE-0-2026-93857)
Vulnerability from cvelistv5 – Published: 2026-10-27 15:52 – Updated: 2026-10-29 10:45
VLAI
EPSS
VEX
Title
Fireware OS Pre-Authentication Stack Buffer Overflow in SIP Proxy Allows Remote Code Execution
Summary
A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 03:56 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-93857 | 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:
12.0 , < 12.5.22
(custom)
|
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CVE-2026-93475 (GCVE-0-2026-93475)
Vulnerability from cvelistv5 – Published: 2026-10-20 15:04 – Updated: 2026-10-20 17:02
VLAI
EPSS
VEX
Title
Out-of-bounds Write via an Unbounded RSA Modulus in NetX Secure X.509
Summary
The X.509 parser in NetX Secure accepts an RSA public key of any size, but every signature-verification path decrypts into fixed-size buffers dimensioned for the `NX_CRYPTO_MAX_RSA_MODULUS_SIZE` default of 4096 bits. A certificate carrying a larger modulus drives an out-of-bounds write past a file-scope static during ordinary certificate-chain verification.
It is reachable pre-authentication. The issuer used for the crypto operation is looked up in the remote, peer-supplied store before the trusted store, so the attacker supplies the oversized key themselves as an intermediate in the chain they present. It triggers on a TLS or DTLS client verifying a malicious server's chain, and on a server performing client-certificate authentication.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 17:02 UTC
Assigner
eclipse
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX - NetX Duo |
Affected:
0 , ≤ 6.5.1.202602
(semver)
Unaffected: 6.5.2.202603 |
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CVE-2026-93452 (GCVE-0-2026-93452)
Vulnerability from cvelistv5 – Published: 2026-09-17 23:25 – Updated: 2026-10-08 15:51
VLAI
EPSS
VEX
Title
snappy-java through 1.1.10.8 Buffer Overflow in Snappy.compress
Summary
snappy-java through 1.1.10.8 contains a buffer overflow vulnerability in Snappy.compress(ByteBuffer, ByteBuffer) that writes past the end of the destination buffer. Attackers can supply incompressible data that exceeds the destination buffer's remaining capacity, corrupting off-heap memory and causing JVM termination.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:59 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/xerial/snappy-java/issues/732 | issue-tracking |
| https://github.com/xerial/snappy-java/blob/v1.1.1… | technical-description |
| https://github.com/xerial/snappy-java | product |
| https://www.vulncheck.com/advisories/snappy-java-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| xerial | snappy-java |
Affected:
0 , ≤ 1.1.10.8
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2026-09-14 00:00
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CVE-2026-93451 (GCVE-0-2026-93451)
Vulnerability from cvelistv5 – Published: 2026-09-17 23:25 – Updated: 2026-10-08 15:51
VLAI
EPSS
VEX
Title
snappy-java through 1.1.10.8 Buffer Overflow via typed uncompress methods
Summary
snappy-java through 1.1.10.8 contains a buffer overflow vulnerability in typed Snappy.uncompress*Array methods that allocate output arrays by dividing uncompressed length by element size but pass the undivided length to native code. Attackers controlling compressed input can cause misaligned length values to write past array bounds with attacker-controlled bytes, corrupting heap memory.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 16:28 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
VulnCheck
CNA
References
4 references
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|---|---|
| https://github.com/xerial/snappy-java/issues/729 | issue-tracking |
| https://github.com/xerial/snappy-java/blob/v1.1.1… | technical-description |
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CVE-2026-93393 (GCVE-0-2026-93393)
Vulnerability from cvelistv5 – Published: 2026-09-17 20:26 – Updated: 2026-09-18 17:35
VLAI
EPSS
VEX
Title
Heap overflow via oversized decrypted TLS record sequence in Windows Secure Channel stream
Summary
A heap-based buffer overflow exists in the TLS transport layer of the MongoDB C Driver when built with the Windows platform TLS backend. A remote endpoint that the client connects to can cause the driver to write uncontrolled data outside the bounds of a heap allocation while processing incoming encrypted traffic after the TLS handshake completes. No authentication or user interaction is required, because the affected processing occurs before any application-level authentication completes. Triggering this issue may lead to memory corruption in the client process, disclosure of adjacent heap memory, or termination of the process.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 17:33 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
mongodb
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB Inc. | C Driver |
Affected:
2.4.0
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CVE-2026-93015 (GCVE-0-2026-93015)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:16 – Updated: 2026-09-17 19:19
VLAI
EPSS
VEX
Title
BlueKitchen BTstack through 1.8.2 A2DP SEP Discovery Out-of-Bounds Write
Summary
BlueKitchen BTstack through 1.8.2 fails to validate the peer-reported endpoint count against table bounds in A2DP stream endpoint discovery. A bonded peer can send an AVDTP DISCOVER response with more endpoints than the fixed table holds, causing out-of-bounds writes that corrupt adjacent static objects and crash the process or sever event delivery.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:17 UTC
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/bluekitchen/btstack/commit/fc2… | patch |
| https://github.com/bluekitchen/btstack/blob/v1.8.… | technical-description |
| https://github.com/bluekitchen/btstack/blob/v1.8.… | technical-description |
| https://github.com/bluekitchen/btstack | product |
| https://www.vulncheck.com/advisories/bluekitchen-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| BlueKitchen GmbH | BTstack |
Affected:
0 , ≤ 1.8.2
(semver)
|
Date Public
2026-07-22 00:00
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CVE-2026-93011 (GCVE-0-2026-93011)
Vulnerability from cvelistv5 – Published: 2026-10-29 12:47 – Updated: 2026-11-06 01:50
VLAI
EPSS
VEX
Title
Dnsmasq: dnsmasq: heap out-of-bounds write in dnssec validator via to_wire/from_wire transforms
Summary
A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 14:07 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
redhat
CNA
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-93011 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2536082 | issue-trackingx_refsource_REDHAT |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Ceph Storage 9 |
cpe:/a:redhat:ceph_storage:9
|
|
| 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 OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 5 |
cpe:/a:redhat:openshift:5
|
|
| Red Hat | Red Hat OpenStack Platform 13 (Queens) |
cpe:/a:redhat:openstack:13
|
|
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0
|
Date Public
2026-10-28 09:30
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CVE-2026-92880 (GCVE-0-2026-92880)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:00 – Updated: 2026-09-22 15:45 X_Open Source
VLAI
EPSS
VEX
Title
vgmstream EA SCHl parser vadpcm_decoder.c vadpcm_read_coefs_be out-of-bounds write
Summary
A weakness has been identified in vgmstream up to r2117. Impacted is the function vadpcm_read_coefs_be of the file src/coding/vadpcm_decoder.c of the component EA SCHl parser. This manipulation of the argument entry/entries causes out-of-bounds write. Remote exploitation of the attack is possible. Patch name: ae37662ad626254ddd96ad69ac263792d7a92024. It is suggested to install a patch to address this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 15:05 UTC
Assigner
VulDB
CNA
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/406346 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/406346/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-92880 | third-party-advisory |
| https://vuldb.com/submit/942161 | third-party-advisory |
| https://github.com/vgmstream/vgmstream/issues/1994 | issue-tracking |
| https://github.com/vgmstream/vgmstream/pull/2008 | issue-trackingpatch |
| https://github.com/vgmstream/vgmstream/commit/ae3… | patch |
| https://github.com/vgmstream/vgmstream/ | product |
Impacted products
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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.