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().
5397 vulnerabilities reference this CWE, most recent first.
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-PPQ5-66VM-5JVJ
Vulnerability from github – Published: 2026-08-20 00:35 – Updated: 2026-08-20 00:35
VLAI
Details
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-76918"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-19T23:16:20Z",
"severity": "MODERATE"
},
"details": "SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service",
"id": "GHSA-ppq5-66vm-5jvj",
"modified": "2026-08-20T00:35:10Z",
"published": "2026-08-20T00:35:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76918"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21465"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2026-85.html"
}
],
"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-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"
}
]
}
GHSA-PQ6W-8H36-7F4V
Vulnerability from github – Published: 2024-05-01 21:30 – Updated: 2024-09-06 21:32
VLAI
Details
Buffer-Overflow vulnerability at conv.c:68 of stsaz phiola v2.0-rc22 allows a remote attacker to execute arbitrary code via the a crafted .wav file.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-33428"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-01T19:15:27Z",
"severity": "HIGH"
},
"details": "Buffer-Overflow vulnerability at conv.c:68 of stsaz phiola v2.0-rc22 allows a remote attacker to execute arbitrary code via the a crafted .wav file.",
"id": "GHSA-pq6w-8h36-7f4v",
"modified": "2024-09-06T21:32:27Z",
"published": "2024-05-01T21:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33428"
},
{
"type": "WEB",
"url": "https://github.com/stsaz/phiola/issues/29"
},
{
"type": "WEB",
"url": "https://github.com/Helson-S/FuzzyTesting/blob/master/phiola/heap-buffer-overflow-1/heap-buffer-overflow-1.assets/image-20240420005017430.png"
},
{
"type": "WEB",
"url": "https://github.com/Helson-S/FuzzyTesting/blob/master/phiola/heap-buffer-overflow-1/heap-buffer-overflow-1.md"
},
{
"type": "WEB",
"url": "https://github.com/Helson-S/FuzzyTesting/blob/master/phiola/heap-buffer-overflow-1/poc"
},
{
"type": "WEB",
"url": "https://github.com/Helson-S/FuzzyTesting/tree/master/phiola/heap-buffer-overflow-1"
}
],
"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-PQ85-W7C4-J7X5
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-2026-56159"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:22Z",
"severity": "CRITICAL"
},
"details": "Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-pq85-w7c4-j7x5",
"modified": "2026-07-14T18:32:37Z",
"published": "2026-07-14T18:32:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56159"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56159"
}
],
"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-PQCG-5G8P-H5V7
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32
VLAI
Details
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-69285"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:18:43Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-pqcg-5g8p-h5v7",
"modified": "2026-09-08T18:32:19Z",
"published": "2026-09-08T18:32:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69285"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69285"
}
],
"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-PQF3-X5QW-V98W
Vulnerability from github – Published: 2026-09-29 21:33 – Updated: 2026-09-29 21:33
VLAI
Details
Buffer overflow in ANGLE in Google Chrome on on Android prior to 154.0.8037.92 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
Severity
9.6 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-102331"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-29T20:17:16Z",
"severity": "CRITICAL"
},
"details": "Buffer overflow in ANGLE in Google Chrome on on Android prior to 154.0.8037.92 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)",
"id": "GHSA-pqf3-x5qw-v98w",
"modified": "2026-09-29T21:33:24Z",
"published": "2026-09-29T21:33:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102331"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01807488085.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/551673541"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PQGV-PHC2-5P8R
Vulnerability from github – Published: 2026-09-14 03:30 – Updated: 2026-09-14 03:30
VLAI
Details
libarchive 3.8.x before 3.8.2 has a strcpy heap-based buffer overflow in the gzip writer via the original-filename field to archive_compressor_gzip_open in archive_write_add_filter_gzip.c, aka GHSA-92wx-p669-8gr9. This relates to bsdtar. Exploitation envisions a marginally plausible scenario in which original-filename is obtained from an untrusted party. (original-filename is not derived from the input data.)
Severity
{
"affected": [],
"aliases": [
"CVE-2025-64031"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-14T01:16:26Z",
"severity": "LOW"
},
"details": "libarchive 3.8.x before 3.8.2 has a strcpy heap-based buffer overflow in the gzip writer via the original-filename field to archive_compressor_gzip_open in archive_write_add_filter_gzip.c, aka GHSA-92wx-p669-8gr9. This relates to bsdtar. Exploitation envisions a marginally plausible scenario in which original-filename is obtained from an untrusted party. (original-filename is not derived from the input data.)",
"id": "GHSA-pqgv-phc2-5p8r",
"modified": "2026-09-14T03:30:21Z",
"published": "2026-09-14T03:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64031"
},
{
"type": "WEB",
"url": "https://github.com/libarchive/libarchive/pull/2734"
},
{
"type": "WEB",
"url": "https://github.com/libarchive/libarchive/pull/2734/commits"
},
{
"type": "WEB",
"url": "https://github.com/libarchive/libarchive/pull/2734/files"
},
{
"type": "WEB",
"url": "https://gist.github.com/ttuurrnn/1365a4a9b1c3d5826a3a9bbe111f26b8"
},
{
"type": "WEB",
"url": "https://github.com/libarchive/libarchive/blob/master/libarchive/archive_write_add_filter_gzip.c"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-PQHH-6372-C5R4
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32
VLAI
Details
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-68775"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:18:24Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.",
"id": "GHSA-pqhh-6372-c5r4",
"modified": "2026-09-08T18:32:11Z",
"published": "2026-09-08T18:32:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68775"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68775"
}
],
"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-PQVV-87XC-VPW4
Vulnerability from github – Published: 2026-02-06 09:30 – Updated: 2026-02-06 09:30
VLAI
Details
Heap-based buffer overflow vulnerability in the image module. Impact: Successful exploitation of this vulnerability may affect availability.
Severity
7.3 (High)
{
"affected": [],
"aliases": [
"CVE-2026-24925"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-06T09:15:51Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow vulnerability in the image module.\nImpact: Successful exploitation of this vulnerability may affect availability.",
"id": "GHSA-pqvv-87xc-vpw4",
"modified": "2026-02-06T09:30:29Z",
"published": "2026-02-06T09:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24925"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletin/2026/2"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletinlaptops/2026/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.