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.
15627 vulnerabilities reference this CWE, most recent first.
CVE-2026-42953 (GCVE-0-2026-42953)
Vulnerability from cvelistv5 – Published: 2026-07-07 21:39 – Updated: 2026-07-08 13:03
VLAI
EPSS
VEX
Title
Out-of-bounds write in Labcenter Proteus
Summary
The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 13:03 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
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CVE-2026-42944 (GCVE-0-2026-42944)
Vulnerability from cvelistv5 – Published: 2026-05-20 09:20 – Updated: 2026-08-26 12:04
VLAI
EPSS
VEX
Title
Heap overflow with multiple NSID, COOKIE, PADDING EDNS options
Summary
NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options ('nsid', 'answer-cookie', 'pad-responses' (default)) need to be enabled for the vulnerability to be exploited. An adversary who can query Unbound can exploit the vulnerability by attaching multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options to the query. A flaw in the size calculation of the EDNS field truncates the correct value which allows the encoder to overflow the available space when writing. Those two combined lead to a heap overflow write of Unbound controlled data and eventually a crash. Unbound 1.25.1 contains a patch with a fix to de-duplicate the EDNS options and a fix to prevent truncation of the EDNS field size calculation.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-20 13:37 UTC
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/unbound/CVE-20… | vendor-advisory |
| https://access.redhat.com/security/cve/CVE-2026-42944 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479774 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:23231 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24365 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24369 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19752 | vendor-advisoryx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Unbound |
Affected:
1.14.0 , < 1.25.1
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:1.24.2-7.el10_2.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:1.16.2-5.11.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:1.24.2-3.el9_8.1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.25.1-0.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
Date Public
2026-05-20 00:00
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CVE-2026-42910 (GCVE-0-2026-42910)
Vulnerability from cvelistv5 – Published: 2026-06-09 17:05 – Updated: 2026-08-25 22:44
VLAI
EPSS
VEX
Title
Windows Hotpatch Monitoring Service Elevation of Privilege Vulnerability
Summary
Out-of-bounds write in Windows Hotpatch Monitoring Service allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:57 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8655
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8655
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2269
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32995
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32995
(custom)
|
Date Public
2026-06-09 14:00
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CVE-2026-42370 (GCVE-0-2026-42370)
Vulnerability from cvelistv5 – Published: 2026-05-04 00:48 – Updated: 2026-06-15 19:19
VLAI
EPSS
VEX
Title
GeoVision GV-VMS V20 WebCam Server Login stack overflow vulnerability
Summary
A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.
Severity
9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 00:00 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.geovision.com.tw/cyber_security.php | vendor-advisory |
| https://talosintelligence.com/vulnerability_reports/ | third-party-advisory |
| https://www.talosintelligence.com/vulnerability_r… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GeoVision Inc. | GV-VMS V20.0.2 |
Affected:
20.0.2
Unaffected: 20.0.2.10 Unaffected: 20.1.0 cpe:2.3:a:geovision_inc.:gv-vms_v20.0.2:20.0.2:*:windows:*:*:*:*:* |
Date Public
2026-04-27 00:00
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CVE-2026-42369 (GCVE-0-2026-42369)
Vulnerability from cvelistv5 – Published: 2026-05-04 00:47 – Updated: 2026-05-15 07:45
VLAI
EPSS
VEX
Title
GeoVision GV-VMS V20 WebCam Server stack overflow vulnerability
Summary
GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other security devices. It is a native application accessed locally, but it is also possible to enable remote access via the "WebCam Server" feature. Once enabled, it is possible to access to the management and monitoring feature via a regular Web interface. This webersever is another native application, compiled without ASLR, which makes exploitation much easier and more likely.
Most of the features require authentication before being reachable and leverage a standard login page to grant access. However the `gvapi` endpoint uses its own authentication mechanism via an `HTTP Authorization` header. It supports both `Basic` authentication and the `Digest` modes of authentication.
#### Stack-overflow via unbound copy of base64 decoded string
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Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 00:00 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.geovision.com.tw/cyber_security.php | vendor-advisorythird-party-advisory |
| https://https://talosintelligence.com/vulnerabili… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GeoVision Inc. | GV-VMS V20.0.2 |
Affected:
V20.0.2
Unaffected: V20.0.2.10 Unaffected: V20.1.0.0 cpe:2.3:a:geovision_inc.:gv-vms_v20.0.2:v20.0.2:*:windows:*:*:*:*:* |
Date Public
2026-04-27 00:00
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CVE-2026-42311 (GCVE-0-2026-42311)
Vulnerability from cvelistv5 – Published: 2026-05-09 04:11 – Updated: 2026-05-12 02:24
VLAI
EPSS
VEX
Title
Pillow: OOB Write with Invalid PSD Tile Extents (Integer Overflow)
Summary
Pillow is a Python imaging library. From version 10.3.0 to before version 12.2.0, processing a malicious PSD file could lead to memory corruption, potentially resulting in a crash or arbitrary code execution. This issue has been patched in version 12.2.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 02:24 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/python-pillow/Pillow/security/… | x_refsource_CONFIRM |
| https://github.com/python-pillow/Pillow/pull/9520 | x_refsource_MISC |
| https://github.com/python-pillow/Pillow/commit/58… | x_refsource_MISC |
| https://github.com/python-pillow/Pillow/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| python-pillow | Pillow |
Affected:
>= 10.3.0, < 12.2.0
|
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CVE-2026-42250 (GCVE-0-2026-42250)
Vulnerability from cvelistv5 – Published: 2026-05-28 13:15 – Updated: 2026-06-05 07:47 X_Open Source
VLAI
EPSS
VEX
Title
Off-by-One Leading to Out-of-Bounds Write in bzip2
Summary
bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service).
This issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 14:22 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/05/CVE-2026-42250/ | third-party-advisory |
| https://sourceware.org/bzip2/ | product |
| https://inbox.sourceware.org/bzip2-devel/20260528… | vendor-advisory |
| https://sourceware.org/cgit/bzip2/commit/?id=35d1… | patch |
Impacted products
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CVE-2026-42046 (GCVE-0-2026-42046)
Vulnerability from cvelistv5 – Published: 2026-05-11 21:23 – Updated: 2026-05-12 13:16
VLAI
EPSS
VEX
Title
libcaca: Heap OOB write in canvas import functions caused by int overflow
Summary
libcaca is a colour ASCII art library. In 0.99.beta20 and earlier, an integer overflow vulnerability in libcaca's canvas import functionality allows an attacker to cause a controlled heap out-of-bounds write (heap overflow) by supplying a crafted file in the "caca" format. Depending on the build configuration and memory allocator, this may lead to memory corruption or remote code execution. This is the same vulnerability as CVE-2021-3410 but the fix at that time was not fully correct. Commit fb77acff9ba6bb01d53940da34fb10f20b156a23 fixes this vulnerability.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 13:16 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cacalabs/libcaca/security/advi… | x_refsource_CONFIRM |
| https://github.com/cacalabs/libcaca/issues/86 | x_refsource_MISC |
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CVE-2026-41990 (GCVE-0-2026-41990)
Vulnerability from cvelistv5 – Published: 2026-04-23 04:39 – Updated: 2026-04-23 16:22
VLAI
EPSS
VEX
Summary
Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-23 15:58 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-41989 (GCVE-0-2026-41989)
Vulnerability from cvelistv5 – Published: 2026-04-23 04:30 – Updated: 2026-07-14 12:48
VLAI
EPSS
VEX
Summary
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-23 15:58 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| gnupg | Libgcrypt |
Affected:
1.8.8 , < 1.10.4
(semver)
Affected: 1.11.0 , < 1.11.3 (semver) Affected: 1.12.0 , < 1.12.2 (semver) cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* |
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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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.