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().
5426 vulnerabilities reference this CWE, most recent first.
GHSA-FQRG-FVV5-42G2
Vulnerability from github – Published: 2026-05-21 12:31 – Updated: 2026-05-21 15:34When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace daemon to retrieve the list of extended attributes for a given file. The FUSE protocol requires the daemon to return a packed list of NUL-terminated strings. The fusefs kernel module calls strlen() on this daemon-supplied buffer without first verifying that the entire list is NUL-terminated.
If a malicious daemon sends a non-NUL-terminated list, the fusefs kernel module may read beyond the end of one heap-allocated buffer and potentially write beyond the end of a second buffer. A malicious daemon could disclose up to 253 bytes of kernel heap memory, or it could inject up to 250 attacker-controlled bytes into unallocated kernel heap space.
{
"affected": [],
"aliases": [
"CVE-2026-45252"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-21T10:16:26Z",
"severity": "MODERATE"
},
"details": "When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace daemon to retrieve the list of extended attributes for a given file. The FUSE protocol requires the daemon to return a packed list of NUL-terminated strings. The fusefs kernel module calls strlen() on this daemon-supplied buffer without first verifying that the entire list is NUL-terminated.\n\nIf a malicious daemon sends a non-NUL-terminated list, the fusefs kernel module may read beyond the end of one heap-allocated buffer and potentially write beyond the end of a second buffer. A malicious daemon could disclose up to 253 bytes of kernel heap memory, or it could inject up to 250 attacker-controlled bytes into unallocated kernel heap space.",
"id": "GHSA-fqrg-fvv5-42g2",
"modified": "2026-05-21T15:34:08Z",
"published": "2026-05-21T12:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45252"
},
{
"type": "WEB",
"url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:20.fusefs.asc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FQV7-FHQ2-929V
Vulnerability from github – Published: 2024-05-01 21:30 – Updated: 2024-07-03 18:38libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.
{
"affected": [],
"aliases": [
"CVE-2023-26793"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-01T19:15:21Z",
"severity": "CRITICAL"
},
"details": "libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.",
"id": "GHSA-fqv7-fhq2-929v",
"modified": "2024-07-03T18:38:21Z",
"published": "2024-05-01T21:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26793"
},
{
"type": "WEB",
"url": "https://github.com/stephane/libmodbus/issues/683"
}
],
"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-FQW7-JXVW-P9PW
Vulnerability from github – Published: 2026-02-03 21:31 – Updated: 2026-03-16 18:32Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet whose length exceeds the maximum expected value.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120.
{
"affected": [],
"aliases": [
"CVE-2025-58455"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-03T19:16:13Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet whose length exceeds the maximum expected value.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120.",
"id": "GHSA-fqw7-jxvw-p9pw",
"modified": "2026-03-16T18:32:02Z",
"published": "2026-02-03T21:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-58455"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2289"
},
{
"type": "WEB",
"url": "https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware"
},
{
"type": "WEB",
"url": "https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware"
},
{
"type": "WEB",
"url": "https://www.tp-link.com/us/support/faq/4943"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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"
}
]
}
GHSA-FR33-MQ6Q-MX98
Vulnerability from github – Published: 2024-10-08 18:33 – Updated: 2024-10-08 18:33Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-43593"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-08T18:15:27Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-fr33-mq6q-mx98",
"modified": "2024-10-08T18:33:17Z",
"published": "2024-10-08T18:33:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43593"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43593"
}
],
"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-FR9W-862R-X425
Vulnerability from github – Published: 2026-07-27 18:31 – Updated: 2026-07-27 21:31LibRaw 0.21 is vulnerable to Buffer Overflow in the stretch() function (src/libraw_cxx.cpp) and fuji_rotate() function (src/decoders/fuji.cpp).
{
"affected": [],
"aliases": [
"CVE-2026-51235"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-27T18:16:56Z",
"severity": "HIGH"
},
"details": "LibRaw 0.21 is vulnerable to Buffer Overflow in the stretch() function (src/libraw_cxx.cpp) and fuji_rotate() function (src/decoders/fuji.cpp).",
"id": "GHSA-fr9w-862r-x425",
"modified": "2026-07-27T21:31:21Z",
"published": "2026-07-27T18:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-51235"
},
{
"type": "WEB",
"url": "https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51235"
},
{
"type": "WEB",
"url": "http://libraw.com"
}
],
"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-FRF6-886P-P44M
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2025-24057"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T17:16:28Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.",
"id": "GHSA-frf6-886p-p44m",
"modified": "2025-03-11T18:32:17Z",
"published": "2025-03-11T18:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24057"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24057"
}
],
"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-FRM4-P95X-PR4G
Vulnerability from github – Published: 2025-11-25 18:32 – Updated: 2025-11-28 18:30A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.207 and prior that could allow an attacker to disclose information or execute arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2025-65085"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-25T18:15:54Z",
"severity": "HIGH"
},
"details": "A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.207 and prior that could allow an attacker to disclose information or execute arbitrary code.",
"id": "GHSA-frm4-p95x-pr4g",
"modified": "2025-11-28T18:30:22Z",
"published": "2025-11-25T18:32:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-65085"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-01"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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"
}
]
}
GHSA-FV37-H825-2CJ8
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-69563"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:25Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-fv37-h825-2cj8",
"modified": "2026-09-08T18:32:45Z",
"published": "2026-09-08T18:32:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69563"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69563"
}
],
"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-FV8W-Q2XX-FC7R
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-69592"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:29Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-fv8w-q2xx-fc7r",
"modified": "2026-09-08T18:32:47Z",
"published": "2026-09-08T18:32:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69592"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69592"
}
],
"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-FV9Q-MGWX-M5GR
Vulnerability from github – Published: 2023-07-10 21:31 – Updated: 2024-04-04 05:54A heap buffer overflow vulnerability was found in sox, in the lsx_readbuf function at sox/src/formats_i.c:98:16. This flaw can lead to a denial of service, code execution, or information disclosure.
{
"affected": [],
"aliases": [
"CVE-2023-34432"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-10T21:15:10Z",
"severity": "HIGH"
},
"details": "A heap buffer overflow vulnerability was found in sox, in the lsx_readbuf function at sox/src/formats_i.c:98:16. This flaw can lead to a denial of service, code execution, or information disclosure.",
"id": "GHSA-fv9q-mgwx-m5gr",
"modified": "2024-04-04T05:54:11Z",
"published": "2023-07-10T21:31:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-34432"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-34432"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2212291"
}
],
"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"
}
]
}
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.