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().
4094 vulnerabilities reference this CWE, most recent first.
GHSA-VM4G-9V9F-C5X3
Vulnerability from github – Published: 2025-05-13 18:30 – Updated: 2025-05-13 18:30Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-29964"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-13T17:15:56Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-vm4g-9v9f-c5x3",
"modified": "2025-05-13T18:30:55Z",
"published": "2025-05-13T18:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29964"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29964"
}
],
"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-VMMG-W7G6-PM76
Vulnerability from github – Published: 2024-08-13 18:31 – Updated: 2024-08-13 18:31Windows Secure Kernel Mode Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-38142"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-13T18:15:18Z",
"severity": "HIGH"
},
"details": "Windows Secure Kernel Mode Elevation of Privilege Vulnerability",
"id": "GHSA-vmmg-w7g6-pm76",
"modified": "2024-08-13T18:31:16Z",
"published": "2024-08-13T18:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38142"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38142"
}
],
"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-VMQG-MGPJ-HJ4M
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-50372"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:38Z",
"severity": "HIGH"
},
"details": "Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-vmqg-mgpj-hj4m",
"modified": "2026-07-14T18:32:18Z",
"published": "2026-07-14T18:32:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50372"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50372"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VP6C-CPGR-622F
Vulnerability from github – Published: 2025-05-07 09:31 – Updated: 2025-05-07 09:31An Heap-based Buffer Overflow in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to induce a crash in IO devices that use the library by sending a malicious RPC packet.
{
"affected": [],
"aliases": [
"CVE-2025-32400"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-07T07:15:50Z",
"severity": "HIGH"
},
"details": "An Heap-based Buffer Overflow in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to induce a crash in IO devices that use the library by sending a malicious RPC packet.",
"id": "GHSA-vp6c-cpgr-622f",
"modified": "2025-05-07T09:31:17Z",
"published": "2025-05-07T09:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-32400"
},
{
"type": "WEB",
"url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-32400"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VP6P-93MP-PF7G
Vulnerability from github – Published: 2022-05-24 16:58 – Updated: 2024-04-04 02:14A specifically crafted PDF file can lead to a heap corruption when opened in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.
{
"affected": [],
"aliases": [
"CVE-2019-5048"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-09T21:15:00Z",
"severity": "HIGH"
},
"details": "A specifically crafted PDF file can lead to a heap corruption when opened in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.",
"id": "GHSA-vp6p-93mp-pf7g",
"modified": "2024-04-04T02:14:30Z",
"published": "2022-05-24T16:58:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5048"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0817"
}
],
"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-VP6V-57G2-V7VW
Vulnerability from github – Published: 2022-07-20 00:00 – Updated: 2022-07-27 00:00DOS / potential heap overwrite in mkv demuxing using lzo decompression. Integer overflow in matroskademux element in lzo decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.
{
"affected": [],
"aliases": [
"CVE-2022-1924"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-190",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-07-19T20:15:00Z",
"severity": "HIGH"
},
"details": "DOS / potential heap overwrite in mkv demuxing using lzo decompression. Integer overflow in matroskademux element in lzo decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.",
"id": "GHSA-vp6v-57g2-v7vw",
"modified": "2022-07-27T00:00:31Z",
"published": "2022-07-20T00:00:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1924"
},
{
"type": "WEB",
"url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00001.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5204"
}
],
"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-VPGP-GJQV-364P
Vulnerability from github – Published: 2023-04-13 00:30 – Updated: 2024-04-04 03:25A heap-based buffer overflow issue was discovered in ImageMagick's ImportMultiSpectralQuantum() function in MagickCore/quantum-import.c. An attacker could pass specially crafted file to convert, triggering an out-of-bounds read error, allowing an application to crash, resulting in a denial of service.
{
"affected": [],
"aliases": [
"CVE-2023-1906"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-12T22:15:00Z",
"severity": "MODERATE"
},
"details": "A heap-based buffer overflow issue was discovered in ImageMagick\u0027s ImportMultiSpectralQuantum() function in MagickCore/quantum-import.c. An attacker could pass specially crafted file to convert, triggering an out-of-bounds read error, allowing an application to crash, resulting in a denial of service.",
"id": "GHSA-vpgp-gjqv-364p",
"modified": "2024-04-04T03:25:48Z",
"published": "2023-04-13T00:30:49Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-35q2-86c7-9247"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1906"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/commit/d7a8bdd7bb33cf8e58bc01b4a4f2ea5466f8c6b3"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick6/commit/e30c693b37c3b41723f1469d1226a2c814ca443d"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-1906"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2185714"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6655G3GPS42WQM32DJHUCZALI2URQSCO"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6655G3GPS42WQM32DJHUCZALI2URQSCO"
}
],
"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-VPJV-4254-VV44
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2026-50448"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:49Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.",
"id": "GHSA-vpjv-4254-vv44",
"modified": "2026-07-14T18:32:24Z",
"published": "2026-07-14T18:32:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50448"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50448"
}
],
"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-VQCC-Q5P5-R9Q5
Vulnerability from github – Published: 2026-07-03 21:31 – Updated: 2026-07-03 21:31Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-56645"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-03T21:17:00Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-vqcc-q5p5-r9q5",
"modified": "2026-07-03T21:31:38Z",
"published": "2026-07-03T21:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56645"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56645"
}
],
"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-VQP6-3HFF-2H3W
Vulnerability from github – Published: 2023-02-24 12:31 – Updated: 2023-03-06 18:30A vulnerability classified as critical was found in vox2png 1.0. Affected by this vulnerability is an unknown functionality of the file vox2png.c. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-221743.
{
"affected": [],
"aliases": [
"CVE-2023-1010"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-24T11:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability classified as critical was found in vox2png 1.0. Affected by this vulnerability is an unknown functionality of the file vox2png.c. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-221743.",
"id": "GHSA-vqp6-3hff-2h3w",
"modified": "2023-03-06T18:30:21Z",
"published": "2023-02-24T12:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1010"
},
{
"type": "WEB",
"url": "https://github.com/10cksYiqiyinHangzhouTechnology/vox2png/blob/main/README.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.221743"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.221743"
}
],
"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"
}
]
}
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.