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().
4096 vulnerabilities reference this CWE, most recent first.
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"
}
]
}
GHSA-PPJ5-C4CC-C277
Vulnerability from github – Published: 2024-02-06 15:32 – Updated: 2025-11-05 00:31
VLAI
Details
A flaw was found in Indent. This issue may allow a local user to use a specially-crafted file to trigger a heap-based buffer overflow, which can lead to an application crash.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-0911"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-06T15:15:08Z",
"severity": "MODERATE"
},
"details": "A flaw was found in Indent. This issue may allow a local user to use a specially-crafted file to trigger a heap-based buffer overflow, which can lead to an application crash.",
"id": "GHSA-ppj5-c4cc-c277",
"modified": "2025-11-05T00:31:16Z",
"published": "2024-02-06T15:32:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0911"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-0911"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2260399"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYVDWBSJROWOWMPDVMVG4L5FGVJC5REN"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GIEHMOQDLPRTE4FDOA4X6PMOCNLK6BCP"
},
{
"type": "WEB",
"url": "https://lists.gnu.org/archive/html/bug-indent/2024-01/msg00000.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PPM8-GJFW-8977
Vulnerability from github – Published: 2024-04-19 18:31 – Updated: 2025-11-04 18:30
VLAI
Details
Buffer Overflow vulnerability in Ffmpeg v.N113007-g8d24a28d06 allows a local attacker to execute arbitrary code via the libavfilter/avf_showspectrum.c:1789:52 component in showspectrumpic_request_frame
Severity
8.0 (High)
{
"affected": [],
"aliases": [
"CVE-2023-51795"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-19T17:15:52Z",
"severity": "HIGH"
},
"details": "Buffer Overflow vulnerability in Ffmpeg v.N113007-g8d24a28d06 allows a local attacker to execute arbitrary code via the libavfilter/avf_showspectrum.c:1789:52 component in showspectrumpic_request_frame",
"id": "GHSA-ppm8-gjfw-8977",
"modified": "2025-11-04T18:30:49Z",
"published": "2024-04-19T18:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51795"
},
{
"type": "WEB",
"url": "https://ffmpeg.org"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPETICRXUOGRIM4U3BCRTIKE3IZWCSBT"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LE3ASLH6QF2E5OVJI5VA3JSEPJFFFMNY"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LE3ASLH6QF2E5OVJI5VA3JSEPJFFFMNY"
},
{
"type": "WEB",
"url": "https://trac.ffmpeg.org/ticket/10749"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PPMM-VG73-P2W2
Vulnerability from github – Published: 2022-09-16 00:00 – Updated: 2025-01-07 21:30
VLAI
Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. 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 ND2 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-15071.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-40655"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-15T16:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. 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 ND2 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-15071.",
"id": "GHSA-ppmm-vg73-p2w2",
"modified": "2025-01-07T21:30:52Z",
"published": "2022-09-16T00:00:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-40655"
},
{
"type": "WEB",
"url": "https://www.software-dl.microscope.healthcare.nikon.com/vuln/index.html"
},
{
"type": "WEB",
"url": "https://www.software-dl.microscope.healthcare.nikon.com/vuln/pdf/Vulnerabilities_on_NIS-Elements_Freeware_and_L_en_240917_02.pdf"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-1211"
}
],
"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-PPQ4-G8VP-2CV6
Vulnerability from github – Published: 2021-11-20 00:00 – Updated: 2022-03-17 00:06
VLAI
Details
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-3973"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-19T12:15:00Z",
"severity": "HIGH"
},
"details": "vim is vulnerable to Heap-based Buffer Overflow",
"id": "GHSA-ppq4-g8vp-2cv6",
"modified": "2022-03-17T00:06:45Z",
"published": "2021-11-20T00:00:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3973"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2022/01/15/1"
}
],
"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-PQ29-2M6M-938V
Vulnerability from github – Published: 2022-04-19 00:00 – Updated: 2022-04-27 00:00
VLAI
Details
global heap buffer overflow in skip_range in GitHub repository vim/vim prior to 8.2.4763. This vulnerability is capable of crashing software, Bypass Protection Mechanism, Modify Memory, and possible remote execution
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-1381"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-18T01:15:00Z",
"severity": "HIGH"
},
"details": "global heap buffer overflow in skip_range in GitHub repository vim/vim prior to 8.2.4763. This vulnerability is capable of crashing software, Bypass Protection Mechanism, Modify Memory, and possible remote execution",
"id": "GHSA-pq29-2m6m-938v",
"modified": "2022-04-27T00:00:28Z",
"published": "2022-04-19T00:00:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1381"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/f50808ed135ab973296bca515ae4029b321afe47"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/55f9c0e8-c221-48b6-a00e-bdcaebaba4a4"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KVPZVE2CIE2NGCHZDMEHPBWN3LK2UQAA"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6E457NYOIRWBJHKB7ON44UY5AVTG4HU"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202305-16"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213488"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/28"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/41"
}
],
"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"
}
]
}
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.