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().
6336 vulnerabilities reference this CWE, most recent first.
GHSA-5QHF-W29V-X9QF
Vulnerability from github – Published: 2026-10-13 21:34 – Updated: 2026-10-13 21:34Heap-based buffer overflow in WebDAV allows an unauthorized attacker to elevate privileges over a network.
{
"affected": [],
"aliases": [
"CVE-2026-70262"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:19:44Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in WebDAV allows an unauthorized attacker to elevate privileges over a network.",
"id": "GHSA-5qhf-w29v-x9qf",
"modified": "2026-10-13T21:34:19Z",
"published": "2026-10-13T21:34:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70262"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70262"
}
],
"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-5QWJ-VX24-9CJQ
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-68828"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:18:29Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-5qwj-vx24-9cjq",
"modified": "2026-09-08T18:32:13Z",
"published": "2026-09-08T18:32:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68828"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68828"
}
],
"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-5QWP-3C2F-H999
Vulnerability from github – Published: 2026-02-06 09:30 – Updated: 2026-02-06 09:30Buffer overflow vulnerability in the HDC module. Impact: Successful exploitation of this vulnerability may affect availability.
{
"affected": [],
"aliases": [
"CVE-2026-24922"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-06T09:15:50Z",
"severity": "MODERATE"
},
"details": "Buffer overflow vulnerability in the HDC module.\nImpact: Successful exploitation of this vulnerability may affect availability.",
"id": "GHSA-5qwp-3c2f-h999",
"modified": "2026-02-06T09:30:29Z",
"published": "2026-02-06T09:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24922"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletin/2026/2"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletinlaptops/2026/2"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5R8V-WXQ7-Q8CQ
Vulnerability from github – Published: 2026-09-08 18:33 – Updated: 2026-09-08 18:33Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-72973"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:20:23Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-5r8v-wxq7-q8cq",
"modified": "2026-09-08T18:33:13Z",
"published": "2026-09-08T18:33:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72973"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72973"
}
],
"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-5RFF-8F7C-8JMW
Vulnerability from github – Published: 2026-07-01 17:50 – Updated: 2026-07-01 17:50Summary
A memory-safety vulnerability in Open Babel's ORCA parser allowed an out-of-bounds write when reading a crafted input file.
Details
A second variant of the nAtoms out-of-bounds write in the ORCA
reader: a different malformed-input path produced the same class of
write past the end of the destination buffer.
Impact
Open Babel is a C++ library and CLI used to read and write chemistry
file formats; it is shipped by Linux distributions and embedded in
services that may parse untrusted input. Triggering this vulnerability
requires the victim to open a malicious ORCA file with the obabel
tool, the OBConversion API, or any of the language bindings (Python,
Ruby, Java, R, Perl, C#, PHP).
Affected versions
All releases up to and including 3.1.1.
Patched version
3.2.0 (released 2026-05-26).
Patch
Fix commit: https://github.com/openbabel/openbabel/commit/b239d06e
A minimized reproducer for this CVE is checked in under
test/files/fuzz_regress/ and is exercised on every CI build under
ASAN+UBSAN by the fuzzregresstest harness.
Credit
Reported by Cisco TALOS.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "openbabel"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-46290"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-01T17:50:21Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Summary\n\nA memory-safety vulnerability in Open Babel\u0027s ORCA parser allowed an\nout-of-bounds write when reading a crafted input file.\n\n### Details\n\nA second variant of the `nAtoms` out-of-bounds write in the ORCA\nreader: a different malformed-input path produced the same class of\nwrite past the end of the destination buffer.\n\n### Impact\n\nOpen Babel is a C++ library and CLI used to read and write chemistry\nfile formats; it is shipped by Linux distributions and embedded in\nservices that may parse untrusted input. Triggering this vulnerability\nrequires the victim to open a malicious ORCA file with the `obabel`\ntool, the `OBConversion` API, or any of the language bindings (Python,\nRuby, Java, R, Perl, C#, PHP).\n\n### Affected versions\n\nAll releases up to and including 3.1.1.\n\n### Patched version\n\n3.2.0 (released 2026-05-26).\n\n### Patch\n\nFix commit: https://github.com/openbabel/openbabel/commit/b239d06e\n\nA minimized reproducer for this CVE is checked in under\n`test/files/fuzz_regress/` and is exercised on every CI build under\nASAN+UBSAN by the `fuzzregresstest` harness.\n\n### Credit\n\nReported by Cisco TALOS.",
"id": "GHSA-5rff-8f7c-8jmw",
"modified": "2026-07-01T17:50:21Z",
"published": "2026-07-01T17:50:21Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openbabel/openbabel/security/advisories/GHSA-5rff-8f7c-8jmw"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-46290"
},
{
"type": "WEB",
"url": "https://github.com/openbabel/openbabel/commit/b239d06eb724bb684eea0040e9d87cf07072b081"
},
{
"type": "PACKAGE",
"url": "https://github.com/openbabel/openbabel"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1665"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1665"
}
],
"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"
}
],
"summary": "Open Babel has out-of-bounds write in ORCA nAtoms parser (second variant)"
}
GHSA-5RFW-P2G3-CQFH
Vulnerability from github – Published: 2026-10-29 18:31 – Updated: 2026-10-29 18:31Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-96198"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-29T16:20:08Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-5rfw-p2g3-cqfh",
"modified": "2026-10-29T18:31:08Z",
"published": "2026-10-29T18:31:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96198"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96198"
}
],
"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-5RHP-9F6Q-XF6J
Vulnerability from github – Published: 2026-10-13 21:34 – Updated: 2026-10-13 21:34Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-70048"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:19:15Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-5rhp-9f6q-xf6j",
"modified": "2026-10-13T21:34:01Z",
"published": "2026-10-13T21:34:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70048"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70048"
}
],
"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-5RWG-MFVP-WQ7W
Vulnerability from github – Published: 2026-08-06 00:31 – Updated: 2026-08-06 15:32Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data
{
"affected": [],
"aliases": [
"CVE-2026-67867"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-05T23:16:53Z",
"severity": "HIGH"
},
"details": "Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data",
"id": "GHSA-5rwg-mfvp-wq7w",
"modified": "2026-08-06T15:32:37Z",
"published": "2026-08-06T00:31:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67867"
},
{
"type": "WEB",
"url": "https://github.com/gff-cw/information/issues/18"
},
{
"type": "WEB",
"url": "https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/address_space/sopc_event_manager.c"
},
{
"type": "WEB",
"url": "https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/frontend/client_wrapper/alarm_conditions/libs2opc_client_alarm_conditions.c"
},
{
"type": "WEB",
"url": "https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/frontend/client_wrapper/internal/state_machine.c"
},
{
"type": "WEB",
"url": "https://gitlab.com/systerel/S2OPC/-/work_items/1781"
}
],
"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-5RX8-VPG7-XHX2
Vulnerability from github – Published: 2026-10-27 12:30 – Updated: 2026-10-27 12:30Heap-based Buffer Overflow Vulnerability in JP1 Products.
This issue affects JP1/Integrated Management 3 - Manager: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Manager: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent Minimal Edition: from 13-00 before 13-50-31; JP1/Base: from 11-00 before 12-50-54.
{
"affected": [],
"aliases": [
"CVE-2026-86576"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-27T10:16:56Z",
"severity": "CRITICAL"
},
"details": "Heap-based Buffer Overflow Vulnerability in JP1 Products.\n\nThis issue affects JP1/Integrated Management 3 - Manager: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Manager: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent: from 13-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent Minimal Edition: from 13-00 before 13-50-31; JP1/Base: from 11-00 before 12-50-54.",
"id": "GHSA-5rx8-vpg7-xhx2",
"modified": "2026-10-27T12:30:46Z",
"published": "2026-10-27T12:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86576"
},
{
"type": "WEB",
"url": "https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-155/index.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:L",
"type": "CVSS_V3"
}
]
}
GHSA-5VFP-V42J-9FCC
Vulnerability from github – Published: 2025-07-10 12:31 – Updated: 2025-08-19 15:31A maliciously crafted RTE file, when parsed through Autodesk Revit, 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-2025-5040"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-10T12:15:23Z",
"severity": "HIGH"
},
"details": "A maliciously crafted RTE file, when parsed through Autodesk Revit, 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-5vfp-v42j-9fcc",
"modified": "2025-08-19T15:31:24Z",
"published": "2025-07-10T12:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5040"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/products/autodesk-access/overview"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/trust/security-advisories/adsk-sa-2025-0012"
}
],
"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.