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.
16433 vulnerabilities reference this CWE, most recent first.
CVE-2026-85091 (GCVE-0-2026-85091)
Vulnerability from cvelistv5 – Published: 2026-09-03 01:04 – Updated: 2026-09-03 13:21
VLAI
EPSS
VEX
Title
zlib 1.3.1.2 through 1.3.2 Heap Buffer Overflow via gz_vacate
Summary
zlib versions 1.3.1.2 through 1.3.2 contain a heap buffer overflow vulnerability in the gz_vacate() function when processing non-blocking gzwrite() operations with stale external buffer pointers. Attackers can trigger the overflow by calling gzprintf() or gzvprintf() after a write stall, causing an unchecked memmove() to write beyond the internal input buffer boundary.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:21 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://gist.github.com/thesmartshadow/e0b9481792… | technical-descriptionexploit |
| https://github.com/madler/zlib/blob/v1.3.2/gzwrit… | technical-description |
| https://github.com/madler/zlib | product |
| https://www.vulncheck.com/advisories/zlib-1.3.1.2… | third-party-advisory |
Impacted products
Date Public
2026-09-02 00:00
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CVE-2026-85084 (GCVE-0-2026-85084)
Vulnerability from cvelistv5 – Published: 2026-09-02 23:21 – Updated: 2026-09-03 13:14
VLAI
EPSS
VEX
Title
Out-of-bounds write in TizenFX MediaBufferBase indexer setter due to missing bounds check
Summary
Out-of-bounds Write and Improper Validation of Array Index vulnerability in Samsung Open Source TizenFX Samsung/TizenFX allows Overflow Buffers.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:14 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Samsung/TizenFX/pull/7814 | patch |
| https://github.com/Samsung/TizenFX/pull/7815 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | TizenFX |
Unaffected:
a74b5e5dd6796f939af8dd90f77a7d9962d67df1
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CVE-2026-84969 (GCVE-0-2026-84969)
Vulnerability from cvelistv5 – Published: 2026-09-03 14:59 – Updated: 2026-09-03 15:08
VLAI
EPSS
VEX
Title
Heap overflow via truncated base64 encoding of binary fields in length-limited JSON output
Summary
A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no privileges on the application that links the driver, may cause a small amount of data outside the intended buffer to be altered.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:07 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
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CVE-2026-84854 (GCVE-0-2026-84854)
Vulnerability from cvelistv5 – Published: 2026-10-06 09:59 – Updated: 2026-10-15 01:24
VLAI
EPSS
VEX
Title
Out of Bound Write on WibuKey for Windows
Summary
In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 00:00 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cdn.wibu.com/fileadmin/wibu_downloads/sec… | vendor-advisory |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| wibu-systems-ag | wibukey |
Affected:
0 , < 6.72
(custom)
cpe:2.3:a:wibu-systems-ag:wibukey:*:*:*:*:*:*:*:* |
|
| Siemens | PSS(R)SINCAL V21.5 |
Affected:
0 , < *
(custom)
|
|
| Siemens | PSS(R)SINCAL V22.0 |
Affected:
0 , < *
(custom)
|
|
| Siemens | PSS(R)SINCAL V22.5 |
Affected:
0 , < V22.5 Update 5
(custom)
|
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CVE-2026-84698 (GCVE-0-2026-84698)
Vulnerability from cvelistv5 – Published: 2026-09-02 00:37 – Updated: 2026-09-04 02:21
VLAI
EPSS
VEX
Title
PX4 Autopilot sd_bench Heap Buffer Overflow via Block Size
Summary
PX4 Autopilot contains a heap buffer overflow vulnerability in the sd_bench command that writes a four-byte block number into a user-supplied sized allocation. Attackers can invoke sd_bench with a block size below four bytes to overflow the heap buffer and potentially execute code or crash the system.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 02:19 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/PX4/PX4-Autopilot | product |
| https://github.com/PX4/PX4-Autopilot/issues/28373 | issue-tracking |
| https://github.com/PX4/PX4-Autopilot/blob/v1.17.0… | technical-description |
| https://www.vulncheck.com/advisories/px4-autopilo… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PX4 | PX4-Autopilot |
Affected:
0 , ≤ 1.17.0
(semver)
cpe:2.3:a:px4:autopilot:*:*:*:*:*:*:*:* |
Date Public
2026-08-25 00:00
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CVE-2026-84444 (GCVE-0-2026-84444)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:56 – Updated: 2026-09-22 14:50
VLAI
EPSS
VEX
Title
libheif uncompressed tiled image encoding allows out-of-bounds write
Summary
libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, when WITH_UNCOMPRESSED_CODEC is enabled, heif_context_add_image_tile() accepts an independently constructed tile whose component-plane dimensions do not match the tile geometry established by the prototype image. ImageItem_uncompressed::add_image_tile() passes that tile directly to unc_encoder::encode_tile(), which lacked the check_component_sizes() gate and sizes its output from the configured tile geometry while copying the tile's actual component-plane dimensions. An oversized component plane can therefore make unc_encoder_component_interleave::encode_tile() copy attacker-controlled data beyond the heap output buffer. This issue is fixed in version 1.23.2.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 14:50 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/strukturag/libheif/security/ad… | x_refsource_CONFIRM |
| https://github.com/strukturag/libheif/commit/e650… | x_refsource_MISC |
| https://github.com/strukturag/libheif/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strukturag | libheif |
Affected:
< 1.23.2
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CVE-2026-84419 (GCVE-0-2026-84419)
Vulnerability from cvelistv5 – Published: 2026-10-13 21:44 – Updated: 2026-10-15 16:43
VLAI
EPSS
VEX
Title
Out-of-Bounds Write
Summary
Out-of-bounds write vulnerability in Citrix Workspace app for Windows.
This issue affects Workspace app for Windows: before 2603.20 CR, before LTSR 2607 Hotfix 1, and before LTSR 2507 CU3 Hotfix 1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 16:35 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Citrix | Workspace app for Windows |
Affected:
0 , < 2603.20 CR
(patch)
Affected: 0 , < LTSR 2607 Hotfix 1 (patch) Affected: 0 , < LTSR 2507 CU3 Hotfix 1 (patch) |
Date Public
2026-10-13 21:40
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CVE-2026-84383 (GCVE-0-2026-84383)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:55 – Updated: 2026-09-18 16:11
VLAI
EPSS
VEX
Title
libheif: Heap buffer overflow in `scale_nearest_neighbor()` via duplicate Alpha planes from nested `iden`/`auxl` items
Summary
libheif is a HEIF and AVIF file format decoder and encoder. From 1.22.0 until 1.23.2, a crafted HEIF, HEIC, or AVIF item graph using nested iden and auxl references can make HeifPixelImage::transfer_channel_from_image_as() append duplicate Alpha planes with different bit depths to m_storage. HeifPixelImage::scale_nearest_neighbor() in libheif/image/pixelimage.cc allocates the destination Alpha plane using the first plane's 8-bit depth, then iterates a later 10-bit or 12-bit Alpha component and writes uint16_t samples into the same 8-bit allocation. The output geometry controls the overflow extent and the encoded sample values control the data written, allowing a remote file processed by heif_decode_image() to cause a heap out-of-bounds write. This issue is fixed in version 1.23.2.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 16:07 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/strukturag/libheif/security/ad… | x_refsource_CONFIRM |
| https://github.com/strukturag/libheif/commit/f4fb… | x_refsource_MISC |
| https://github.com/strukturag/libheif/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strukturag | libheif |
Affected:
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"value": "libheif is a HEIF and AVIF file format decoder and encoder. From 1.22.0 until 1.23.2, a crafted HEIF, HEIC, or AVIF item graph using nested iden and auxl references can make HeifPixelImage::transfer_channel_from_image_as() append duplicate Alpha planes with different bit depths to m_storage. HeifPixelImage::scale_nearest_neighbor() in libheif/image/pixelimage.cc allocates the destination Alpha plane using the first plane\u0027s 8-bit depth, then iterates a later 10-bit or 12-bit Alpha component and writes uint16_t samples into the same 8-bit allocation. The output geometry controls the overflow extent and the encoded sample values control the data written, allowing a remote file processed by heif_decode_image() to cause a heap out-of-bounds write. This issue is fixed in version 1.23.2."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"name": "https://github.com/strukturag/libheif/security/advisories/GHSA-g89c-p67h-r497",
"tags": [
"x_refsource_CONFIRM"
],
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},
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"discovery": "UNKNOWN"
},
"title": "libheif: Heap buffer overflow in `scale_nearest_neighbor()` via duplicate Alpha planes from nested `iden`/`auxl` items"
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CVE-2026-84016 (GCVE-0-2026-84016)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-16 23:17
VLAI
EPSS
VEX
Title
Windows EAPHost Service Elevation of Privilege Vulnerability
Summary
Out-of-bounds write in Windows EAPHost 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 2026-10-13 20:16 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
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
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"product": "Windows 11 Version 25H2",
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"status": "affected",
"version": "10.0.26300.0",
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},
{
"platforms": [
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],
"product": "Windows Server 2012",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.2.9200.26434",
"status": "affected",
"version": "6.2.9200.0",
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},
{
"platforms": [
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"product": "Windows Server 2012 (Server Core installation)",
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"product": "Windows Server 2016",
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"product": "Windows Server 2019",
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"product": "Windows Server 2022",
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"product": "Windows Server 2025 (Server Core installation)",
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CVE-2026-83966 (GCVE-0-2026-83966)
Vulnerability from cvelistv5 – Published: 2026-10-13 20:31 – Updated: 2026-10-15 03:56
VLAI
EPSS
VEX
Title
Substance3D - Sampler | Out-of-bounds Write (CWE-787)
Summary
Substance3D - Sampler is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 00:00 UTC
CWE
- CWE-787 - Out-of-bounds Write (CWE-787)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.adobe.com/trust/security/products/sub… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Substance 3D Sampler |
Affected:
0 , ≤ 6.0.3
(semver)
Unaffected: 6.0.4 (semver) |
Date Public
2026-10-13 17:00
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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.