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-492C-RR88-QFHX
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-07-08 18:31Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-49672"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T17:15:51Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-492c-rr88-qfhx",
"modified": "2025-07-08T18:31:46Z",
"published": "2025-07-08T18:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49672"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49672"
}
],
"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-495J-R955-Q8F3
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-2026-50461"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:51Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.",
"id": "GHSA-495j-r955-q8f3",
"modified": "2026-07-14T18:32:25Z",
"published": "2026-07-14T18:32:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50461"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50461"
}
],
"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-49F9-RCRJ-V5WP
Vulnerability from github – Published: 2025-11-07 18:30 – Updated: 2025-11-07 18:30A maliciously crafted PRT file, when parsed through certain Autodesk products, can force a Memory Corruption vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process.
{
"affected": [],
"aliases": [
"CVE-2025-9458"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-07T18:15:37Z",
"severity": "HIGH"
},
"details": "A maliciously crafted PRT file, when parsed through certain Autodesk products, can force a Memory Corruption vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process.",
"id": "GHSA-49f9-rcrj-v5wp",
"modified": "2025-11-07T18:30:31Z",
"published": "2025-11-07T18:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9458"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/products/autodesk-access/overview"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/trust/security-advisories/adsk-sa-2025-0019"
}
],
"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-49HV-2HP8-W863
Vulnerability from github – Published: 2024-05-14 18:30 – Updated: 2024-07-03 18:40HDF5 Library through 1.14.3 contains a heap-based buffer over-read in H5F_addr_decode_len in H5Fint.c, resulting in the corruption of the instruction pointer.
{
"affected": [],
"aliases": [
"CVE-2024-32620"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T15:36:47Z",
"severity": "HIGH"
},
"details": "HDF5 Library through 1.14.3 contains a heap-based buffer over-read in H5F_addr_decode_len in H5Fint.c, resulting in the corruption of the instruction pointer.",
"id": "GHSA-49hv-2hp8-w863",
"modified": "2024-07-03T18:40:38Z",
"published": "2024-05-14T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-32620"
},
{
"type": "WEB",
"url": "https://www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-49MR-VRXV-HMWG
Vulnerability from github – Published: 2022-03-17 00:00 – Updated: 2022-03-23 00:00A flaw was found in htmldoc before v1.9.12. Heap buffer overflow in pspdf_prepare_outpages(), in ps-pdf.cxx may lead to execute arbitrary code and denial of service.
{
"affected": [],
"aliases": [
"CVE-2021-23165"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-16T15:15:00Z",
"severity": "CRITICAL"
},
"details": "A flaw was found in htmldoc before v1.9.12. Heap buffer overflow in pspdf_prepare_outpages(), in ps-pdf.cxx may lead to execute arbitrary code and denial of service.",
"id": "GHSA-49mr-vrxv-hmwg",
"modified": "2022-03-23T00:00:31Z",
"published": "2022-03-17T00:00:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23165"
},
{
"type": "WEB",
"url": "https://github.com/michaelrsweet/htmldoc/issues/413"
},
{
"type": "WEB",
"url": "https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f"
},
{
"type": "WEB",
"url": "https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f.patch"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1967014"
}
],
"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-49PJ-8X2G-XV47
Vulnerability from github – Published: 2026-04-14 18:30 – Updated: 2026-04-14 18:30Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-32087"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-14T18:17:12Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-49pj-8x2g-xv47",
"modified": "2026-04-14T18:30:40Z",
"published": "2026-04-14T18:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32087"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32087"
}
],
"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-49VP-7QG3-F9GX
Vulnerability from github – Published: 2025-01-14 18:32 – Updated: 2025-01-14 18:32Windows Telephony Service Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2025-21238"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:15:37Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-49vp-7qg3-f9gx",
"modified": "2025-01-14T18:32:03Z",
"published": "2025-01-14T18:32:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21238"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21238"
}
],
"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-49W2-42M2-3C53
Vulnerability from github – Published: 2025-07-30 00:32 – Updated: 2025-11-03 21:34A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.6. Processing a maliciously crafted file may lead to heap corruption.
{
"affected": [],
"aliases": [
"CVE-2025-31280"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-30T00:15:31Z",
"severity": "HIGH"
},
"details": "A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.6. Processing a maliciously crafted file may lead to heap corruption.",
"id": "GHSA-49w2-42m2-3c53",
"modified": "2025-11-03T21:34:11Z",
"published": "2025-07-30T00:32:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31280"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/124149"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2025/Jul/32"
}
],
"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-49X2-M4XP-J5PW
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-12447"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T13:20:00Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-49x2-m4xp-j5pw",
"modified": "2026-06-17T18:35:46Z",
"published": "2026-06-17T18:35:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12447"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/513405023"
}
],
"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-4CJV-RRCW-XG72
Vulnerability from github – Published: 2026-01-23 06:31 – Updated: 2026-01-23 06:31ALGO 8180 IP Audio Alerter InformaCast Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of ALGO 8180 IP Audio Alerter devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the InformaCast functionality. 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 device. Was ZDI-CAN-28302.
{
"affected": [],
"aliases": [
"CVE-2026-0793"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-23T04:16:07Z",
"severity": "HIGH"
},
"details": "ALGO 8180 IP Audio Alerter InformaCast Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of ALGO 8180 IP Audio Alerter devices. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the InformaCast functionality. 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 device. Was ZDI-CAN-28302.",
"id": "GHSA-4cjv-rrcw-xg72",
"modified": "2026-01-23T06:31:25Z",
"published": "2026-01-23T06:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0793"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-015"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/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.