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().
4111 vulnerabilities reference this CWE, most recent first.
GHSA-PM2F-322J-VG72
Vulnerability from github – Published: 2022-04-06 00:01 – Updated: 2022-04-16 00:01
VLAI
Details
heap-buffer-overflow in GitHub repository radareorg/radare2 prior to 5.6.8. This vulnerability is capable of inducing denial of service.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-1244"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-05T19:15:00Z",
"severity": "MODERATE"
},
"details": "heap-buffer-overflow in GitHub repository radareorg/radare2 prior to 5.6.8. This vulnerability is capable of inducing denial of service.",
"id": "GHSA-pm2f-322j-vg72",
"modified": "2022-04-16T00:01:30Z",
"published": "2022-04-06T00:01:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1244"
},
{
"type": "WEB",
"url": "https://github.com/radareorg/radare2/commit/2b77b277d67ce061ee6ef839e7139ebc2103c1e3"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/8ae2c61a-2220-47a5-bfe8-fe6d41ab1f82"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PMQ2-R54M-HMF6
Vulnerability from github – Published: 2023-11-14 18:30 – Updated: 2025-10-22 00:32
VLAI
Details
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-36036"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-14T18:15:33Z",
"severity": "HIGH"
},
"details": "Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability",
"id": "GHSA-pmq2-r54m-hmf6",
"modified": "2025-10-22T00:32:53Z",
"published": "2023-11-14T18:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36036"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36036"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36036"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PMXX-F7H9-2Q7W
Vulnerability from github – Published: 2024-06-27 21:32 – Updated: 2024-07-03 18:47
VLAI
Details
Heap Buffer Overflow vulnerability in zziplib v0.13.77 allows attackers to cause a denial of service via the __zzip_parse_root_directory() function at /zzip/zip.c.
Severity
4.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-39133"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-27T20:15:22Z",
"severity": "MODERATE"
},
"details": "Heap Buffer Overflow vulnerability in zziplib v0.13.77 allows attackers to cause a denial of service via the __zzip_parse_root_directory() function at /zzip/zip.c.",
"id": "GHSA-pmxx-f7h9-2q7w",
"modified": "2024-07-03T18:47:10Z",
"published": "2024-06-27T21:32:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39133"
},
{
"type": "WEB",
"url": "https://github.com/gdraheim/zziplib/issues/164"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-PP2W-5337-F6WG
Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-02-10 15:30
VLAI
Details
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-20868"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T18:16:16Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-pp2w-5337-f6wg",
"modified": "2026-02-10T15:30:21Z",
"published": "2026-01-13T18:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20868"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20868"
},
{
"type": "WEB",
"url": "https://www.vicarius.io/vsociety/posts/cve-2026-20868-detection-script-heap-based-buffer-overflow-vulnerability-affecting-windows-rras"
},
{
"type": "WEB",
"url": "https://www.vicarius.io/vsociety/posts/cve-2026-20868-mitigation-script-heap-based-buffer-overflow-vulnerability-affecting-windows-rras"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PP3P-CH6P-J7FR
Vulnerability from github – Published: 2024-05-14 18:30 – Updated: 2024-07-03 18:40
VLAI
Details
HDF5 Library through 1.14.3 has a heap-based buffer over-read in H5VM_memcpyvv in H5VM.c (called from H5D__compact_readvv in H5Dcompact.c).
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-32605"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T15:36:45Z",
"severity": "HIGH"
},
"details": "HDF5 Library through 1.14.3 has a heap-based buffer over-read in H5VM_memcpyvv in H5VM.c (called from H5D__compact_readvv in H5Dcompact.c).",
"id": "GHSA-pp3p-ch6p-j7fr",
"modified": "2024-07-03T18:40:29Z",
"published": "2024-05-14T18:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-32605"
},
{
"type": "WEB",
"url": "https://www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PP67-VH85-488H
Vulnerability from github – Published: 2024-09-30 18:31 – Updated: 2024-09-30 21:02
VLAI
Details
Giflib Project v5.2.2 is vulnerable to a heap buffer overflow via gif2rgb.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-45993"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-30T17:15:04Z",
"severity": "MODERATE"
},
"details": "Giflib Project v5.2.2 is vulnerable to a heap buffer overflow via gif2rgb.",
"id": "GHSA-pp67-vh85-488h",
"modified": "2024-09-30T21:02:12Z",
"published": "2024-09-30T18:31:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45993"
},
{
"type": "WEB",
"url": "https://gitlab.com/mthandazo/project-pov"
},
{
"type": "WEB",
"url": "http://giflib.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-PP8G-RW5H-XF5X
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-49800"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T17:16:56Z",
"severity": "HIGH"
},
"details": "Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-pp8g-rw5h-xf5x",
"modified": "2026-07-14T18:32:02Z",
"published": "2026-07-14T18:32:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49800"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49800"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PP96-H6R5-4XC9
Vulnerability from github – Published: 2025-09-09 18:31 – Updated: 2025-09-09 18:31
VLAI
Details
Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-54907"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-09T17:16:02Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code locally.",
"id": "GHSA-pp96-h6r5-4xc9",
"modified": "2025-09-09T18:31:22Z",
"published": "2025-09-09T18:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54907"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54907"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PPF4-9J93-82W7
Vulnerability from github – Published: 2024-05-14 18:31 – Updated: 2024-05-14 18:31
VLAI
Details
A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 2). The affected application is vulnerable to heap-based buffer overflow while parsing specially crafted PAR files. This could allow an attacker to execute code in the context of the current process.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-34771"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T16:17:29Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in Solid Edge (All versions \u003c V224.0 Update 2). The affected application is vulnerable to heap-based buffer overflow while parsing specially crafted PAR files. This could allow an attacker to execute code in the context of the current process.",
"id": "GHSA-ppf4-9j93-82w7",
"modified": "2024-05-14T18:31:01Z",
"published": "2024-05-14T18:31:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34771"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-589937.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PPGF-28QJ-X35R
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-50518"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:58Z",
"severity": "CRITICAL"
},
"details": "Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-ppgf-28qj-x35r",
"modified": "2026-07-14T18:32:28Z",
"published": "2026-07-14T18:32:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50518"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50518"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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.