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-5888-FPMR-F2V8
Vulnerability from github – Published: 2024-11-12 18:30 – Updated: 2024-11-12 18:30Windows Telephony Service Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-43627"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-12T18:15:30Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-5888-fpmr-f2v8",
"modified": "2024-11-12T18:30:58Z",
"published": "2024-11-12T18:30:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43627"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43627"
}
],
"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-58F7-F9V5-XPF2
Vulnerability from github – Published: 2025-04-15 21:31 – Updated: 2025-08-19 15:31A maliciously crafted PDF file, when linked or imported into Autodesk applications, can force a Heap-Based Overflow vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the context of the current process.
{
"affected": [],
"aliases": [
"CVE-2025-1273"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-15T21:15:46Z",
"severity": "HIGH"
},
"details": "A maliciously crafted PDF file, when linked or imported into Autodesk applications, can force a Heap-Based Overflow vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the context of the current process.",
"id": "GHSA-58f7-f9v5-xpf2",
"modified": "2025-08-19T15:31:20Z",
"published": "2025-04-15T21:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-1273"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/products/autodesk-access/overview"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/trust/security-advisories/adsk-sa-2025-0003"
}
],
"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-58G3-HFH7-P3CH
Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30PDF-XChange Editor OXPS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 OXPS 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-19655.
{
"affected": [],
"aliases": [
"CVE-2023-39494"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:15:16Z",
"severity": "HIGH"
},
"details": "PDF-XChange Editor OXPS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 OXPS 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-19655.",
"id": "GHSA-58g3-hfh7-p3ch",
"modified": "2024-05-03T03:30:56Z",
"published": "2024-05-03T03:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39494"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1131"
}
],
"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-58GQ-7W24-HJ3P
Vulnerability from github – Published: 2025-04-08 18:34 – Updated: 2025-04-08 18:34Bridge versions 14.1.5, 15.0.2 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-2025-27193"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T18:15:54Z",
"severity": "HIGH"
},
"details": "Bridge versions 14.1.5, 15.0.2 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-58gq-7w24-hj3p",
"modified": "2025-04-08T18:34:49Z",
"published": "2025-04-08T18:34:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27193"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/bridge/apsb25-25.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-58XC-HPVQ-8473
Vulnerability from github – Published: 2025-05-06 20:00 – Updated: 2025-05-06 20:00ffi::nstr() should be marked unsafe, since a pointer to a buffer without a trailing 0 value will cause a heap buffer overflow.
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "redox_uefi_std"
},
"ranges": [
{
"events": [
{
"introduced": "0.1.8"
},
{
"fixed": "0.1.14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": true,
"github_reviewed_at": "2025-05-06T20:00:17Z",
"nvd_published_at": null,
"severity": "LOW"
},
"details": "ffi::nstr() should be marked unsafe, since a pointer to a buffer without a trailing 0 value will cause a heap buffer overflow.",
"id": "GHSA-58xc-hpvq-8473",
"modified": "2025-05-06T20:00:17Z",
"published": "2025-05-06T20:00:17Z",
"references": [
{
"type": "PACKAGE",
"url": "https://gitlab.redox-os.org/redox-os/uefi"
},
{
"type": "WEB",
"url": "https://gitlab.redox-os.org/redox-os/uefi/-/commit/b711d47e815665b0ec8949e39292ad8e3fdd0756"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2025-0032.html"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Redox UEFI Safe API can cause heap-buffer-overflow"
}
GHSA-592M-3G3C-6R9C
Vulnerability from github – Published: 2026-03-10 18:31 – Updated: 2026-03-10 18:31Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2026-26108"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-10T18:18:39Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.",
"id": "GHSA-592m-3g3c-6r9c",
"modified": "2026-03-10T18:31:21Z",
"published": "2026-03-10T18:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26108"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26108"
}
],
"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-596C-W2JC-JMMX
Vulnerability from github – Published: 2025-06-18 18:30 – Updated: 2025-11-03 21:34A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on an affected device.
This vulnerability exists because memory buffers are allocated incorrectly when PDF files are processed. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to trigger a buffer overflow, likely resulting in the termination of the ClamAV scanning process and a DoS condition on the affected software. Although unproven, there is also a possibility that an attacker could leverage the buffer overflow to execute arbitrary code with the privileges of the ClamAV process.
{
"affected": [],
"aliases": [
"CVE-2025-20260"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T18:15:23Z",
"severity": "CRITICAL"
},
"details": "A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on an affected device.\n\nThis vulnerability exists because memory buffers are allocated incorrectly when PDF files are processed. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to trigger a buffer overflow, likely resulting in the termination of the ClamAV scanning process and a DoS condition on the affected software. Although unproven, there is also a possibility that an attacker could leverage the buffer overflow to execute arbitrary code with the privileges of the ClamAV process.",
"id": "GHSA-596c-w2jc-jmmx",
"modified": "2025-11-03T21:34:04Z",
"published": "2025-06-18T18:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20260"
},
{
"type": "WEB",
"url": "https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00006.html"
}
],
"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-5C27-5R7X-7GMH
Vulnerability from github – Published: 2026-07-14 18:31 – Updated: 2026-07-14 18:31Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-42990"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T17:16:48Z",
"severity": "CRITICAL"
},
"details": "Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-5c27-5r7x-7gmh",
"modified": "2026-07-14T18:31:58Z",
"published": "2026-07-14T18:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42990"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42990"
}
],
"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-5C39-HCVQ-5XXC
Vulnerability from github – Published: 2022-12-23 00:30 – Updated: 2022-12-30 21:30Multiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specially crafted ImageOutput Object can lead to a heap buffer overflow. An attacker can provide malicious input to trigger these vulnerabilities.This vulnerability arises when the ymax variable is set to 0xFFFF and m_spec.format is TypeDesc::UINT8
{
"affected": [],
"aliases": [
"CVE-2022-43602"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-22T22:15:00Z",
"severity": "HIGH"
},
"details": "Multiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specially crafted ImageOutput Object can lead to a heap buffer overflow. An attacker can provide malicious input to trigger these vulnerabilities.This vulnerability arises when the `ymax` variable is set to 0xFFFF and `m_spec.format` is `TypeDesc::UINT8`",
"id": "GHSA-5c39-hcvq-5xxc",
"modified": "2022-12-30T21:30:15Z",
"published": "2022-12-23T00:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-43602"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202305-33"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1656"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5384"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5C5V-CH87-QH4M
Vulnerability from github – Published: 2026-01-29 09:31 – Updated: 2026-01-29 09:31An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.
{
"affected": [],
"aliases": [
"CVE-2026-23567"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-29T09:16:04Z",
"severity": "MODERATE"
},
"details": "An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.",
"id": "GHSA-5c5v-ch87-qh4m",
"modified": "2026-01-29T09:31:50Z",
"published": "2026-01-29T09:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23567"
},
{
"type": "WEB",
"url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/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.