Common Weakness Enumeration
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-MPF7-WP9R-5PWF
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-55140"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:20Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.",
"id": "GHSA-mpf7-wp9r-5pwf",
"modified": "2026-07-14T18:32:36Z",
"published": "2026-07-14T18:32:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55140"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55140"
}
],
"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-MPFJ-4QFV-J4R3
Vulnerability from github – Published: 2026-06-05 00:31 – Updated: 2026-06-05 18:31
VLAI
Details
Inappropriate implementation in V8 in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-10989"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-04T23:17:02Z",
"severity": "HIGH"
},
"details": "Inappropriate implementation in V8 in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-mpfj-4qfv-j4r3",
"modified": "2026-06-05T18:31:33Z",
"published": "2026-06-05T00:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10989"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/516311623"
}
],
"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-MQ5P-G6C9-C5HC
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-07-08 18:31
VLAI
Details
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-47998"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T17:15:41Z",
"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-mq5p-g6c9-c5hc",
"modified": "2025-07-08T18:31:45Z",
"published": "2025-07-08T18:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47998"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47998"
}
],
"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-MQ5W-GRF9-5RP9
Vulnerability from github – Published: 2024-11-14 12:31 – Updated: 2026-05-12 12:32
VLAI
Details
A heap-based buffer overflow was found in the SDHCI device emulation of QEMU. The bug is triggered when both s->data_count and the size of s->fifo_buffer are set to 0x200, leading to an out-of-bound access. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Severity
6.0 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-3447"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-14T12:15:17Z",
"severity": "MODERATE"
},
"details": "A heap-based buffer overflow was found in the SDHCI device emulation of QEMU. The bug is triggered when both `s-\u003edata_count` and the size of `s-\u003efifo_buffer` are set to 0x200, leading to an out-of-bound access. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.",
"id": "GHSA-mq5w-grf9-5rp9",
"modified": "2026-05-12T12:32:12Z",
"published": "2024-11-14T12:31:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3447"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-3447"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58813"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2274123"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-577017.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html"
},
{
"type": "WEB",
"url": "https://patchew.org/QEMU/20240404085549.16987-1-philmd@linaro.org"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250425-0005"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-MQ8R-RQ42-5CHH
Vulnerability from github – Published: 2026-04-14 21:31 – Updated: 2026-04-14 21:31
VLAI
Details
Bridge versions 16.0.2, 15.1.4 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.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-27312"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-14T20:16:34Z",
"severity": "HIGH"
},
"details": "Bridge versions 16.0.2, 15.1.4 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-mq8r-rq42-5chh",
"modified": "2026-04-14T21:31:48Z",
"published": "2026-04-14T21:31:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27312"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/bridge/apsb26-39.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-MQ9P-QW76-Q6H7
Vulnerability from github – Published: 2024-05-06 15:30 – Updated: 2026-06-09 19:04
VLAI
Summary
pywasm3 contains a heap buffer overflow which leads to segmentation fault
Details
wasm3 v0.5.0 was discovered to contain a heap buffer overflow which leads to segmentation fault via the function "DeallocateSlot" in wasm3/source/m3_compile.c.
Severity
9.8 (Critical)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pywasm3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.5.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-34249"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-09T19:04:03Z",
"nvd_published_at": "2024-05-06T15:15:24Z",
"severity": "CRITICAL"
},
"details": "wasm3 v0.5.0 was discovered to contain a heap buffer overflow which leads to segmentation fault via the function \"DeallocateSlot\" in wasm3/source/m3_compile.c.",
"id": "GHSA-mq9p-qw76-q6h7",
"modified": "2026-06-09T19:04:04Z",
"published": "2024-05-06T15:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34249"
},
{
"type": "WEB",
"url": "https://github.com/wasm3/wasm3/issues/485"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/pywasm3/PYSEC-2024-308.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/wasm3/pywasm3"
},
{
"type": "WEB",
"url": "https://github.com/wasm3/pywasm3/blob/main/wasm3/m3_compile.c#L420"
}
],
"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"
}
],
"summary": "pywasm3 contains a heap buffer overflow which leads to segmentation fault"
}
GHSA-MQ9X-53X3-39H5
Vulnerability from github – Published: 2022-05-13 01:17 – Updated: 2022-05-13 01:17
VLAI
Details
Linux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploit this by operating on a mounted crafted ext4 image.
Severity
6.6 (Medium)
{
"affected": [],
"aliases": [
"CVE-2018-10840"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-16T20:29:00Z",
"severity": "HIGH"
},
"details": "Linux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploit this by operating on a mounted crafted ext4 image.",
"id": "GHSA-mq9x-53x3-39h5",
"modified": "2022-05-13T01:17:56Z",
"published": "2022-05-13T01:17:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10840"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:0162"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2018-10840"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1582346"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10840"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3752-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3752-2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3752-3"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104858"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-MQFP-WCWX-W65X
Vulnerability from github – Published: 2026-07-15 12:32 – Updated: 2026-07-15 12:32
VLAI
Details
ImageMagick before 7.1.2-26 and 6.9.13-51 contains a heap-based buffer over-write vulnerability that occurs when running an X11 import with a crafted window title, which can result in heap memory corruption and denial of service.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-61464"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-15T12:18:20Z",
"severity": "LOW"
},
"details": "ImageMagick before 7.1.2-26 and 6.9.13-51 contains a heap-based buffer over-write vulnerability that occurs when running an X11 import with a crafted window title, which can result in heap memory corruption and denial of service.",
"id": "GHSA-mqfp-wcwx-w65x",
"modified": "2026-07-15T12:32:04Z",
"published": "2026-07-15T12:32:04Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-76q6-2p6h-xjqr"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61464"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/imagemagick-before-26-heap-buffer-over-write-via-x11"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/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-MQM8-P36G-C858
Vulnerability from github – Published: 2023-04-05 18:30 – Updated: 2024-04-04 03:22
VLAI
Details
A buffer overflow vulnerability exists in the Attribute Arena functionality of Ichitaro 2022 1.0.1.57600. A specially crafted document can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-45115"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-05T16:15:00Z",
"severity": "HIGH"
},
"details": "A buffer overflow vulnerability exists in the Attribute Arena functionality of Ichitaro 2022 1.0.1.57600. A specially crafted document can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "GHSA-mqm8-p36g-c858",
"modified": "2024-04-04T03:22:24Z",
"published": "2023-04-05T18:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45115"
},
{
"type": "WEB",
"url": "https://jvn.jp/en/jp/JVN79149117"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1684"
}
],
"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-MQMQ-VR52-C53R
Vulnerability from github – Published: 2024-05-07 09:30 – Updated: 2024-05-07 09:30
VLAI
Details
in OpenHarmony v4.0.0 and prior versions allow a local attacker arbitrary code execution in TCB through heap buffer overflow.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-3758"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-07T07:15:49Z",
"severity": "MODERATE"
},
"details": "in OpenHarmony v4.0.0 and prior versions allow a local attacker arbitrary code execution in TCB through heap buffer overflow.",
"id": "GHSA-mqmq-vr52-c53r",
"modified": "2024-05-07T09:30:32Z",
"published": "2024-05-07T09:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3758"
},
{
"type": "WEB",
"url": "https://gitee.com/openharmony/security/blob/master/zh/security-disclosure/2024/2024-05.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
Operation
Build and Compilation
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
Operation
Build and Compilation
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
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
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.