Common Weakness Enumeration

CWE-122

Allowed

Heap-based Buffer Overflow

Abstraction: Variant · Status: Draft

API response cwe.mitre.org

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().

4138 vulnerabilities reference this CWE, most recent first.

CVE-2025-15666 (GCVE-0-2025-15666)

Vulnerability from cvelistv5 – Published: 2026-07-01 05:45 – Updated: 2026-07-01 14:25
VLAI
Title
Open Asset Import Library Assimp Model File SceneCombiner.cpp Copy heap-based overflow
Summary
A security vulnerability has been detected in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function Assimp::SceneCombiner::Copy of the file code/Common/SceneCombiner.cpp of the component Model File Handler. Such manipulation of the argument width/height leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. This and similar defects are tracked and handled via issue #6128.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/374595 vdb-entrytechnical-description
https://vuldb.com/vuln/374595/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2025-15666 third-party-advisory
https://vuldb.com/submit/844487 third-party-advisory
https://github.com/assimp/assimp/issues/6079 exploitissue-tracking
Impacted products
Vendor Product Version
Open Asset Import Library Assimp Affected: 5.4.0
Affected: 5.4.1
Affected: 5.4.2
Affected: 5.4.3
    cpe:2.3:a:assimp:assimp:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
TYGLS (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2025-15537 (GCVE-0-2025-15537)

Vulnerability from cvelistv5 – Published: 2026-01-18 10:02 – Updated: 2026-02-23 08:37
VLAI
Title
Mapnik dbfile.cpp string_value heap-based overflow
Summary
A security vulnerability has been detected in Mapnik up to 4.2.0. This issue affects the function mapnik::dbf_file::string_value of the file plugins/input/shape/dbfile.cpp. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Mapnik Affected: 4.0
Affected: 4.1
Affected: 4.2.0
Credits
Oneafter (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2025-15536 (GCVE-0-2025-15536)

Vulnerability from cvelistv5 – Published: 2026-01-18 09:02 – Updated: 2026-02-23 08:37 X_Open Source
VLAI
Title
BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow
Summary
A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
BYVoid OpenCC Affected: 1.1.0
Affected: 1.1.1
Affected: 1.1.2
Affected: 1.1.3
Affected: 1.1.4
Affected: 1.1.5
Affected: 1.1.6
Affected: 1.1.7
Affected: 1.1.8
Affected: 1.1.9
Create a notification for this product.
Credits
Oneafter (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2025-15533 (GCVE-0-2025-15533)

Vulnerability from cvelistv5 – Published: 2026-01-18 05:02 – Updated: 2026-02-23 08:36 X_Open Source
VLAI
Title
raysan5 raylib rtext.c GenImageFontAtlas heap-based overflow
Summary
A vulnerability was determined in raysan5 raylib up to 909f040. Affected by this vulnerability is the function GenImageFontAtlas of the file src/rtext.c. Executing a manipulation can lead to heap-based buffer overflow. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. This patch is called 5a3391fdce046bc5473e52afbd835dd2dc127146. Applying a patch is advised to resolve this issue.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
raysan5 raylib Affected: 909f040
Create a notification for this product.
Credits
Oneafter (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2025-15279 (GCVE-0-2025-15279)

Vulnerability from cvelistv5 – Published: 2025-12-31 06:59 – Updated: 2025-12-31 16:19
VLAI
Title
FontForge GUtils BMP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
FontForge GUtils BMP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of pixels within BMP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27517.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
zdi
References
Impacted products
Vendor Product Version
FontForge FontForge Affected: 387146a241b36bcdf6ce229c5a3fe367ed3854a1
Create a notification for this product.
Date Public
2025-12-29 22:54
Show details on NVD website
To clipboard 

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CVE-2025-15277 (GCVE-0-2025-15277)

Vulnerability from cvelistv5 – Published: 2025-12-31 06:59 – Updated: 2025-12-31 16:22
VLAI
Title
FontForge GUtils SGI File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
FontForge GUtils SGI File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of scanlines within SGI files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27920.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
zdi
References
Impacted products
Vendor Product Version
FontForge FontForge Affected: 88de9b7dc76fbdef9069b7664ecc280f1c15ba2f
Create a notification for this product.
Date Public
2025-12-29 22:54
Show details on NVD website
To clipboard 

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CVE-2025-15275 (GCVE-0-2025-15275)

Vulnerability from cvelistv5 – Published: 2025-12-31 06:59 – Updated: 2025-12-31 16:58
VLAI
Title
FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28543.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
zdi
References
Impacted products
Vendor Product Version
FontForge FontForge Affected: aca4f524c6cb14cdc7bc4cd493492a33f5154797
Create a notification for this product.
Date Public
2025-12-29 22:55
Show details on NVD website
To clipboard 

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CVE-2025-15274 (GCVE-0-2025-15274)

Vulnerability from cvelistv5 – Published: 2025-12-31 06:59 – Updated: 2025-12-31 16:58
VLAI
Title
FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28544.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
zdi
References
Impacted products
Vendor Product Version
FontForge FontForge Affected: aca4f524c6cb14cdc7bc4cd493492a33f5154797
Create a notification for this product.
Date Public
2025-12-29 22:56
Show details on NVD website
To clipboard 

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CVE-2025-15272 (GCVE-0-2025-15272)

Vulnerability from cvelistv5 – Published: 2025-12-31 06:59 – Updated: 2025-12-31 16:58
VLAI
Title
FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28547.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
zdi
References
Impacted products
Vendor Product Version
FontForge FontForge Affected: aca4f524c6cb14cdc7bc4cd493492a33f5154797
Create a notification for this product.
Date Public
2025-12-29 22:56
Show details on NVD website
To clipboard 

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CVE-2025-15247 (GCVE-0-2025-15247)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:02 – Updated: 2026-02-24 06:16
VLAI
Title
gmg137 snap7-rs client.rs download heap-based overflow
Summary
A vulnerability was identified in gmg137 snap7-rs up to 153d3e8c16decd7271e2a5b2e3da4d6f68589424. Affected by this issue is the function snap7_rs::client::S7Client::download of the file client.rs. Such manipulation leads to heap-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. The project was informed of the problem early through an issue report but has not responded yet.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.338637 vdb-entrytechnical-description
https://vuldb.com/?ctiid.338637 signaturepermissions-required
https://gitee.com/gmg137/snap7-rs/issues/ID2H7V exploitissue-tracking
https://gitee.com/gmg137/snap7-rs/ product
Impacted products
Vendor Product Version
gmg137 snap7-rs Affected: 153d3e8c16decd7271e2a5b2e3da4d6f68589424
    cpe:2.3:a:gmg137:snap7-rs:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
VulDB Gitee Analyzer
Show details on NVD website
To clipboard 

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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.

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