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().
4149 vulnerabilities reference this CWE, most recent first.
GHSA-739W-7WQ3-9VFF
Vulnerability from github – Published: 2026-07-22 12:32 – Updated: 2026-07-22 12:32There is a heap buffer overflow vulnerability in some Hikvision cameras, which may allow unauthenticated attackers to cause device malfunction by sending specially crafted packets.
{
"affected": [],
"aliases": [
"CVE-2026-61390"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-22T12:18:18Z",
"severity": "HIGH"
},
"details": "There is a heap buffer overflow vulnerability in some Hikvision cameras, which may allow unauthenticated attackers to cause device malfunction by sending specially crafted packets.",
"id": "GHSA-739w-7wq3-9vff",
"modified": "2026-07-22T12:32:17Z",
"published": "2026-07-22T12:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61390"
},
{
"type": "WEB",
"url": "https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-vulnerabilities-in-some-hikvision-cameras"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-73GG-QJFG-4G7X
Vulnerability from github – Published: 2025-04-08 21:31 – Updated: 2025-04-08 21:31Adobe Framemaker versions 2020.8, 2022.6 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-30295"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T19:15:49Z",
"severity": "HIGH"
},
"details": "Adobe Framemaker versions 2020.8, 2022.6 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-73gg-qjfg-4g7x",
"modified": "2025-04-08T21:31:39Z",
"published": "2025-04-08T21:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30295"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/framemaker/apsb25-33.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-73JC-V74H-5W6R
Vulnerability from github – Published: 2026-04-06 18:33 – Updated: 2026-04-06 18:33Memory Corruption when sending IOCTL requests with invalid buffer sizes during memcpy operations.
{
"affected": [],
"aliases": [
"CVE-2026-21372"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-06T16:16:29Z",
"severity": "HIGH"
},
"details": "Memory Corruption when sending IOCTL requests with invalid buffer sizes during memcpy operations.",
"id": "GHSA-73jc-v74h-5w6r",
"modified": "2026-04-06T18:33:06Z",
"published": "2026-04-06T18:33:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21372"
},
{
"type": "WEB",
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html"
}
],
"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-74JQ-5JMR-V9VC
Vulnerability from github – Published: 2024-04-03 18:30 – Updated: 2024-04-03 18:30Kofax Power PDF PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. 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 PDF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22927.
{
"affected": [],
"aliases": [
"CVE-2024-27341"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-03T17:15:54Z",
"severity": "HIGH"
},
"details": "Kofax Power PDF PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of PDF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22927.",
"id": "GHSA-74jq-5jmr-v9vc",
"modified": "2024-04-03T18:30:43Z",
"published": "2024-04-03T18:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27341"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-221"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-74QM-4V7R-JW2F
Vulnerability from github – Published: 2024-09-17 21:30 – Updated: 2024-09-25 18:23A vulnerability was found in MicroPython 1.23.0. It has been classified as critical. Affected is the function mp_vfs_umount of the file extmod/vfs.c of the component VFS Unmount Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 29943546343c92334e8518695a11fc0e2ceea68b. It is recommended to apply a patch to fix this issue. In the VFS unmount process, the comparison between the mounted path string and the unmount requested string is based solely on the length of the unmount string, which can lead to a heap buffer overflow read.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "micropython-copy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "3.3.3.post3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "micropython-io"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "micropython-os-path"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.1.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "micropython-string"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-8946"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2024-09-25T18:23:41Z",
"nvd_published_at": "2024-09-17T19:15:29Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in MicroPython 1.23.0. It has been classified as critical. Affected is the function mp_vfs_umount of the file extmod/vfs.c of the component VFS Unmount Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 29943546343c92334e8518695a11fc0e2ceea68b. It is recommended to apply a patch to fix this issue. In the VFS unmount process, the comparison between the mounted path string and the unmount requested string is based solely on the length of the unmount string, which can lead to a heap buffer overflow read.",
"id": "GHSA-74qm-4v7r-jw2f",
"modified": "2024-09-25T18:23:41Z",
"published": "2024-09-17T21:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8946"
},
{
"type": "WEB",
"url": "https://github.com/micropython/micropython/issues/13006"
},
{
"type": "WEB",
"url": "https://github.com/micropython/micropython/issues/13006#issuecomment-1820309455"
},
{
"type": "WEB",
"url": "https://github.com/micropython/micropython/commit/29943546343c92334e8518695a11fc0e2ceea68b"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/micropython-copy/PYSEC-2024-91.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/micropython-io/PYSEC-2024-93.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/micropython-os-path/PYSEC-2024-95.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/micropython-string/PYSEC-2024-96.yaml"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.277764"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.277764"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.409312"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
],
"summary": "Heap-based Buffer Overflow in MicroPython"
}
GHSA-74RP-5FX4-84M7
Vulnerability from github – Published: 2026-06-26 15:32 – Updated: 2026-06-26 18:33A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file.
{
"affected": [],
"aliases": [
"CVE-2026-30040"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-26T15:16:37Z",
"severity": "MODERATE"
},
"details": "A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file.",
"id": "GHSA-74rp-5fx4-84m7",
"modified": "2026-06-26T18:33:53Z",
"published": "2026-06-26T15:32:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30040"
},
{
"type": "WEB",
"url": "https://kb.cert.org/vuls/id/936962"
},
{
"type": "WEB",
"url": "https://www.faststone.org/FSIVDownload.htm"
}
],
"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-75JH-69XW-FW3P
Vulnerability from github – Published: 2025-01-09 06:30 – Updated: 2025-11-03 21:32A flaw was found in the OpenJPEG project. A heap buffer overflow condition may be triggered when certain options are specified while using the opj_decompress utility. This can lead to an application crash or other undefined behavior.
{
"affected": [],
"aliases": [
"CVE-2024-56826"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-09T04:15:12Z",
"severity": "MODERATE"
},
"details": "A flaw was found in the OpenJPEG project. A heap buffer overflow condition may be triggered when certain options are specified while using the opj_decompress utility. This can lead to an application crash or other undefined behavior.",
"id": "GHSA-75jh-69xw-fw3p",
"modified": "2025-11-03T21:32:07Z",
"published": "2025-01-09T06:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56826"
},
{
"type": "WEB",
"url": "https://github.com/uclouvain/openjpeg/issues/1563"
},
{
"type": "WEB",
"url": "https://github.com/uclouvain/openjpeg/commit/e492644fbded4c820ca55b5e50e598d346e850e8"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:7309"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-56826"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2335172"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00002.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-75VH-4RGJ-M3J3
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-09-15 18:31Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-47981"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T17:15:38Z",
"severity": "CRITICAL"
},
"details": "Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-75vh-4rgj-m3j3",
"modified": "2025-09-15T18:31:05Z",
"published": "2025-07-08T18:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47981"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47981"
},
{
"type": "WEB",
"url": "https://www.vicarius.io/vsociety/posts/cve-2025-47981-detection-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation"
},
{
"type": "WEB",
"url": "https://www.vicarius.io/vsociety/posts/cve-2025-47981-mitigation-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation"
}
],
"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-763W-GP22-47JH
Vulnerability from github – Published: 2025-11-11 18:30 – Updated: 2025-11-11 18:30Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-60724"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-11T18:15:41Z",
"severity": "CRITICAL"
},
"details": "Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-763w-gp22-47jh",
"modified": "2025-11-11T18:30:22Z",
"published": "2025-11-11T18:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60724"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-60724"
}
],
"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-764G-PHPV-FV6G
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-54986"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T17:17:06Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-764g-phpv-fv6g",
"modified": "2026-07-14T18:32:08Z",
"published": "2026-07-14T18:32:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54986"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54986"
}
],
"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"
}
]
}
Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
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
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
Implement and perform bounds checking on input.
Mitigation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
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.