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-68XF-FX4H-9H5M
Vulnerability from github – Published: 2026-06-09 09:32 – Updated: 2026-06-09 09:32Out-of-bounds write vulnerability in the IPC module. Impact: Successful exploitation of this vulnerability may affect availability.
{
"affected": [],
"aliases": [
"CVE-2026-41981"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T08:16:28Z",
"severity": "MODERATE"
},
"details": "Out-of-bounds write vulnerability in the IPC module.\u00a0Impact: Successful exploitation of this vulnerability may affect availability.",
"id": "GHSA-68xf-fx4h-9h5m",
"modified": "2026-06-09T09:32:06Z",
"published": "2026-06-09T09:32:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41981"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletin/2026/6"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/6"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-68XP-MQ28-CC93
Vulnerability from github – Published: 2026-01-13 21:31 – Updated: 2026-01-13 21:31InCopy versions 21.0, 19.5.5 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-2026-21281"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T19:16:25Z",
"severity": "HIGH"
},
"details": "InCopy versions 21.0, 19.5.5 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-68xp-mq28-cc93",
"modified": "2026-01-13T21:31:44Z",
"published": "2026-01-13T21:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21281"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/incopy/apsb26-04.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-697P-W43P-4JGF
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-50680"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:02Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-697p-w43p-4jgf",
"modified": "2026-07-14T18:32:30Z",
"published": "2026-07-14T18:32:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50680"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50680"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-69C2-3R5G-8M4G
Vulnerability from github – Published: 2026-06-09 18:30 – Updated: 2026-06-09 18:30Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
{
"affected": [],
"aliases": [
"CVE-2026-44814"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T17:17:17Z",
"severity": "MODERATE"
},
"details": "Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.",
"id": "GHSA-69c2-3r5g-8m4g",
"modified": "2026-06-09T18:30:47Z",
"published": "2026-06-09T18:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44814"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44814"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-69J8-4J47-XJJ7
Vulnerability from github – Published: 2022-02-15 00:02 – Updated: 2022-02-23 00:01Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.
{
"affected": [],
"aliases": [
"CVE-2022-0570"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-14T12:15:00Z",
"severity": "CRITICAL"
},
"details": "Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.",
"id": "GHSA-69j8-4j47-xjj7",
"modified": "2022-02-23T00:01:14Z",
"published": "2022-02-15T00:02:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0570"
},
{
"type": "WEB",
"url": "https://github.com/mruby/mruby/commit/38b164ace7d6ae1c367883a3d67d7f559783faad"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/65a7632e-f95b-4836-b1a7-9cb95e5124f1"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-69W8-7675-8VRF
Vulnerability from github – Published: 2025-08-12 21:31 – Updated: 2025-08-12 21:31InCopy versions 20.4, 19.5.4 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-2025-54220"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T21:15:41Z",
"severity": "HIGH"
},
"details": "InCopy versions 20.4, 19.5.4 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-69w8-7675-8vrf",
"modified": "2025-08-12T21:31:22Z",
"published": "2025-08-12T21:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54220"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/incopy/apsb25-80.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-6C3R-Q65G-RJQX
Vulnerability from github – Published: 2022-01-27 00:01 – Updated: 2025-11-03 21:30Heap-based Buffer Overflow in Conda vim prior to 8.2.
{
"affected": [],
"aliases": [
"CVE-2022-0359"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-26T12:15:00Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow in Conda vim prior to 8.2.",
"id": "GHSA-6c3r-q65g-rjqx",
"modified": "2025-11-03T21:30:37Z",
"published": "2022-01-27T00:01:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0359"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/85b6747abc15a7a81086db31289cf1b8b17e6cb1"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/a3192d90-4f82-4a67-b7a6-37046cc88def"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213444"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213488"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/28"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/41"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/43"
}
],
"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-6C7W-5XFJ-J2MC
Vulnerability from github – Published: 2022-04-11 00:00 – Updated: 2022-04-19 00:01heap-buffer-overflow in mrb_vm_exec in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.
{
"affected": [],
"aliases": [
"CVE-2022-1286"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-10T11:15:00Z",
"severity": "CRITICAL"
},
"details": "heap-buffer-overflow in mrb_vm_exec in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.",
"id": "GHSA-6c7w-5xfj-j2mc",
"modified": "2022-04-19T00:01:29Z",
"published": "2022-04-11T00:00:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1286"
},
{
"type": "WEB",
"url": "https://github.com/mruby/mruby/commit/b1d0296a937fe278239bdfac840a3fd0e93b3ee9"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/f918376e-b488-4113-963d-ffe8716e4189"
}
],
"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-6C9X-5XPR-57P9
Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2022-05-24 17:48A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT PRO (All versions < 5.5.1), SCALANCE X202-2 IRT (All versions < 5.5.1), SCALANCE X202-2P IRT (incl. SIPLUS NET variant) (All versions < 5.5.1), SCALANCE X202-2P IRT PRO (All versions < 5.5.1), SCALANCE X204 IRT (All versions < 5.5.1), SCALANCE X204 IRT PRO (All versions < 5.5.1), SCALANCE X204-2 (incl. SIPLUS NET variant) (All versions), SCALANCE X204-2FM (All versions), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions), SCALANCE X204-2LD TS (All versions), SCALANCE X204-2TS (All versions), SCALANCE X206-1 (All versions), SCALANCE X206-1LD (All versions), SCALANCE X208 (incl. SIPLUS NET variant) (All versions), SCALANCE X208PRO (All versions), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions), SCALANCE X212-2LD (All versions), SCALANCE X216 (All versions), SCALANCE X224 (All versions), SCALANCE XF201-3P IRT (All versions < 5.5.1), SCALANCE XF202-2P IRT (All versions < 5.5.1), SCALANCE XF204 (All versions), SCALANCE XF204 IRT (All versions < 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions), SCALANCE XF204-2BA IRT (All versions < 5.5.1), SCALANCE XF206-1 (All versions), SCALANCE XF208 (All versions). Incorrect processing of POST requests in the webserver may result in write out of bounds in heap. An attacker might leverage this to cause denial-of-service on the device and potentially remotely execute code.
{
"affected": [],
"aliases": [
"CVE-2021-25668"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-22T21:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been identified in SCALANCE X200-4P IRT (All versions \u003c 5.5.1), SCALANCE X201-3P IRT (All versions \u003c 5.5.1), SCALANCE X201-3P IRT PRO (All versions \u003c 5.5.1), SCALANCE X202-2 IRT (All versions \u003c 5.5.1), SCALANCE X202-2P IRT (incl. SIPLUS NET variant) (All versions \u003c 5.5.1), SCALANCE X202-2P IRT PRO (All versions \u003c 5.5.1), SCALANCE X204 IRT (All versions \u003c 5.5.1), SCALANCE X204 IRT PRO (All versions \u003c 5.5.1), SCALANCE X204-2 (incl. SIPLUS NET variant) (All versions), SCALANCE X204-2FM (All versions), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions), SCALANCE X204-2LD TS (All versions), SCALANCE X204-2TS (All versions), SCALANCE X206-1 (All versions), SCALANCE X206-1LD (All versions), SCALANCE X208 (incl. SIPLUS NET variant) (All versions), SCALANCE X208PRO (All versions), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions), SCALANCE X212-2LD (All versions), SCALANCE X216 (All versions), SCALANCE X224 (All versions), SCALANCE XF201-3P IRT (All versions \u003c 5.5.1), SCALANCE XF202-2P IRT (All versions \u003c 5.5.1), SCALANCE XF204 (All versions), SCALANCE XF204 IRT (All versions \u003c 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions), SCALANCE XF204-2BA IRT (All versions \u003c 5.5.1), SCALANCE XF206-1 (All versions), SCALANCE XF208 (All versions). Incorrect processing of POST requests in the webserver may result in write out of bounds in heap. An attacker might leverage this to cause denial-of-service on the device and potentially remotely execute code.",
"id": "GHSA-6c9x-5xpr-57p9",
"modified": "2022-05-24T17:48:17Z",
"published": "2022-05-24T17:48:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25668"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf"
}
],
"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-6CMP-RHVH-74C5
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Windows Media allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-50336"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:33Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Media allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-6cmp-rhvh-74c5",
"modified": "2026-07-14T18:32:16Z",
"published": "2026-07-14T18:32:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50336"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50336"
}
],
"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"
}
]
}
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.