Common Weakness Enumeration
CWE-122
AllowedHeap-based Buffer Overflow
Abstraction: Variant · Status: Draft
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
6213 vulnerabilities reference this CWE, most recent first.
CVE-2026-67549 (GCVE-0-2026-67549)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:49 – Updated: 2026-09-24 20:57
VLAI
EPSS
VEX
Title
OpenImageIO: TIFF 1-bit CMYK bit conversion heap out-of-bounds write
Summary
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.1.16.0, A crafted 1-bit contiguous cmyk tiff is exposed through a native uint1 imagespec, so callers allocate a bit-packed buffer. tiffinput::read_native_scanline_locked() nevertheless invokes tiffinput::bit_convert() with 8-bit output and writes one expanded byte per value into that smaller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/tiff.imageio/tiffinput.cpp, TIFFInput::bit_convert(), TIFFInput::read_native_scanline_locked(), PHOTOMETRIC_SEPARATED, 1-bit CMYK, and native uint1 ImageSpec, which define the relevant source path, functions, state, and trigger. This issue is fixed in 3.1.16.0.
Severity
7.6 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 20:57 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_CONFIRM |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/user-attachments/files/2961531… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AcademySoftwareFoundation | OpenImageIO |
Affected:
< 3.1.16.0
|
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CVE-2026-67456 (GCVE-0-2026-67456)
Vulnerability from cvelistv5 – Published: 2026-10-13 12:33 – Updated: 2026-10-13 14:39
VLAI
EPSS
VEX
Summary
NVIDIA Warp contains a vulnerability where an attacker could cause a heap-based buffer overflow. A successful exploit of this vulnerability might lead to denial of service.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 14:27 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
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CVE-2026-67388 (GCVE-0-2026-67388)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:14 – Updated: 2026-10-14 23:09
VLAI
EPSS
VEX
Title
Microsoft SQL Server Remote Code Execution Vulnerability
Summary
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:23 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3550.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2130.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4490.9
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2190.7
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) |
Affected:
16.0.0.0 , < 16.0.4275.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1200.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-67384 (GCVE-0-2026-67384)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:13 – Updated: 2026-10-14 23:08
VLAI
EPSS
VEX
Title
Microsoft SQL Server Remote Code Execution Vulnerability
Summary
Integer overflow or wraparound in SQL Server allows an authorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:24 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3550.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2130.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4490.9
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2190.7
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) |
Affected:
16.0.0.0 , < 16.0.4275.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1200.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-67381 (GCVE-0-2026-67381)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:14 – Updated: 2026-10-14 23:09
VLAI
EPSS
VEX
Title
Microsoft SQL Server Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:23 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3550.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2130.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4490.9
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2190.7
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) |
Affected:
16.0.0.0 , < 16.0.4275.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1200.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-67380 (GCVE-0-2026-67380)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:14 – Updated: 2026-10-14 23:09
VLAI
EPSS
VEX
Title
Microsoft SQL Server Remote Code Execution Vulnerability
Summary
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:23 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3550.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2130.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4490.9
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2190.7
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) |
Affected:
16.0.0.0 , < 16.0.4275.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1200.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-67373 (GCVE-0-2026-67373)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:10 – Updated: 2026-10-14 23:05
VLAI
EPSS
VEX
Title
Microsoft SQL Server Remote Code Execution Vulnerability
Summary
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:24 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-67305 (GCVE-0-2026-67305)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-05 13:40
VLAI
EPSS
VEX
Title
FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
Summary
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Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 03:56 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/freerdp-wind… | third-party-advisory |
Impacted products
Date Public
2026-07-15 00:00
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CVE-2026-67191 (GCVE-0-2026-67191)
Vulnerability from cvelistv5 – Published: 2026-07-29 15:50 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
Xlight FTP Server < 3.9.5 Pre-Auth Heap Buffer Overflow via SSH Parser
Summary
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Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 16:32 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.xlightftpd.com/whatsnew.htm | release-notes |
| https://www.vulncheck.com/advisories/xlight-ftp-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Xlight | Xlight FTP Server |
Affected:
0 , < 3.9.5
(semver)
cpe:2.3:a:xlightftpd:xlight_ftp_server:*:*:*:*:*:*:*:* |
Date Public
2026-07-01 00:00
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CVE-2026-66810 (GCVE-0-2026-66810)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-10-21 20:54
VLAI
EPSS
VEX
Title
Microsoft Office Word Information Disclosure Vulnerability
Summary
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 17:58 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Word 2016 |
Affected:
16.0.1 , < 16.0.5565.1000
(custom)
|
Date Public
2026-08-11 14:00
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Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
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-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
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.