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().
4106 vulnerabilities reference this CWE, most recent first.
GHSA-C8C9-XCRW-6RGJ
Vulnerability from github – Published: 2024-12-12 03:33 – Updated: 2024-12-12 03:33
VLAI
Details
Windows IP Routing Management Snapin Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-49080"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-12T02:04:32Z",
"severity": "HIGH"
},
"details": "Windows IP Routing Management Snapin Remote Code Execution Vulnerability",
"id": "GHSA-c8c9-xcrw-6rgj",
"modified": "2024-12-12T03:33:04Z",
"published": "2024-12-12T03:33:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49080"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49080"
}
],
"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-C8F6-X9XM-X27G
Vulnerability from github – Published: 2022-12-14 21:30 – Updated: 2026-05-27 15:32
VLAI
Details
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
Severity
8.6 (High)
{
"affected": [],
"aliases": [
"CVE-2022-2601"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-14T21:15:00Z",
"severity": "HIGH"
},
"details": "A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.",
"id": "GHSA-c8f6-x9xm-x27g",
"modified": "2026-05-27T15:32:59Z",
"published": "2022-12-14T21:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2601"
},
{
"type": "WEB",
"url": "https://arstechnica.com/security/2024/08/a-patch-microsoft-spent-2-years-preparing-is-making-a-mess-for-some-linux-users"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202311-14"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230203-0004"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C8RP-3HJ7-PR8F
Vulnerability from github – Published: 2025-04-23 18:30 – Updated: 2025-04-23 18:30
VLAI
Details
Luxion KeyShot Viewer KSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Luxion KeyShot Viewer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of KSP files. 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 current process. Was ZDI-CAN-24586.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-1045"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-23T17:16:51Z",
"severity": "HIGH"
},
"details": "Luxion KeyShot Viewer KSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Luxion KeyShot Viewer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of KSP files. 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 current process. Was ZDI-CAN-24586.",
"id": "GHSA-c8rp-3hj7-pr8f",
"modified": "2025-04-23T18:30:57Z",
"published": "2025-04-23T18:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-1045"
},
{
"type": "WEB",
"url": "https://download.keyshot.com/cert/ksa-113962/ksa-113962.pdf?version=1.0\u0026_gl=1*1x6i3a*_gcl_au*MTU0ODMwNDI4Ny4xNzQzNTUyMjcx"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-233"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C95W-CQ44-CGC5
Vulnerability from github – Published: 2026-04-14 18:30 – Updated: 2026-04-14 18:30
VLAI
Details
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-26180"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-14T18:16:54Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-c95w-cq44-cgc5",
"modified": "2026-04-14T18:30:38Z",
"published": "2026-04-14T18:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26180"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26180"
}
],
"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-C99Q-X737-HC5J
Vulnerability from github – Published: 2026-02-16 15:32 – Updated: 2026-06-30 03:35
VLAI
Details
Heap buffer overflow in libvpx. This vulnerability affects Firefox < 147.0.4, Firefox ESR < 140.7.1, and Firefox ESR < 115.32.1.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-2447"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-16T15:18:34Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in libvpx. This vulnerability affects Firefox \u003c 147.0.4, Firefox ESR \u003c 140.7.1, and Firefox ESR \u003c 115.32.1.",
"id": "GHSA-c99q-x737-hc5j",
"modified": "2026-06-30T03:35:37Z",
"published": "2026-02-16T15:32:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2447"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4260"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4432"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4447"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4629"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5227"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5228"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5229"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5230"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5231"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5319"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5320"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5323"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5324"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5326"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8746"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8747"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8748"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-2447"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2014390"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440219"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2026/02/msg00028.html"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2447.json"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-10"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-11"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:16174"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3338"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3339"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3361"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3491"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3492"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3493"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3494"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3495"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3496"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3497"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3515"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3516"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3517"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3967"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3976"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3978"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3979"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3980"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3981"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3982"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3983"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3984"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4022"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4152"
}
],
"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-C9C6-6QVF-4M65
Vulnerability from github – Published: 2023-05-19 00:30 – Updated: 2024-04-04 04:14
VLAI
Details
netconsd prior to v0.2 was vulnerable to an integer overflow in its parse_packet function. A malicious individual could leverage this overflow to create heap memory corruption with attacker controlled data.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2023-28753"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-18T22:15:09Z",
"severity": "CRITICAL"
},
"details": "netconsd prior to v0.2 was vulnerable to an integer overflow in its parse_packet function. A malicious individual could leverage this overflow to create heap memory corruption with attacker controlled data.",
"id": "GHSA-c9c6-6qvf-4m65",
"modified": "2024-04-04T04:14:52Z",
"published": "2023-05-19T00:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28753"
},
{
"type": "WEB",
"url": "https://github.com/facebook/netconsd/commit/9fc54edf54f7caea1189c2b979337ed37af2c60e"
},
{
"type": "WEB",
"url": "https://www.facebook.com/security/advisories/cve-2023-28753"
}
],
"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-C9H7-QC47-J43V
Vulnerability from github – Published: 2024-04-03 00:30 – Updated: 2024-04-03 00:30
VLAI
Details
A vulnerability was found in yaml libyaml up to 0.2.5 and classified as critical. Affected by this issue is the function yaml_emitter_emit_flow_sequence_item of the file /src/libyaml/src/emitter.c. The manipulation leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-259052. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Severity
7.3 (High)
{
"affected": [],
"aliases": [
"CVE-2024-3205"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-02T23:15:54Z",
"severity": "HIGH"
},
"details": "A vulnerability was found in yaml libyaml up to 0.2.5 and classified as critical. Affected by this issue is the function yaml_emitter_emit_flow_sequence_item of the file /src/libyaml/src/emitter.c. The manipulation leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-259052. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-c9h7-qc47-j43v",
"modified": "2024-04-03T00:30:55Z",
"published": "2024-04-03T00:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3205"
},
{
"type": "WEB",
"url": "https://drive.google.com/drive/folders/1lwNEs8wqwkUV52f3uQNYMPrxRuXPtGQs?usp=sharing"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.259052"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.259052"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.304561"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-CCHF-XM65-F24C
Vulnerability from github – Published: 2025-03-04 18:33 – Updated: 2025-03-04 21:30
VLAI
Details
An out-of-bounds write vulnerability exists in the ma_dr_flac__decode_samples__lpc functionality of Miniaudio miniaudio v0.11.21. A specially crafted .flac file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
Severity
7.7 (High)
{
"affected": [],
"aliases": [
"CVE-2024-41147"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-04T18:15:24Z",
"severity": "HIGH"
},
"details": "An out-of-bounds write vulnerability exists in the ma_dr_flac__decode_samples__lpc functionality of Miniaudio miniaudio v0.11.21. A specially crafted .flac file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "GHSA-cchf-xm65-f24c",
"modified": "2025-03-04T21:30:55Z",
"published": "2025-03-04T18:33:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41147"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2024-2063"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-2063"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CFG6-HJHR-WR3X
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.
Severity
8.4 (High)
{
"affected": [],
"aliases": [
"CVE-2026-54122"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T17:17:04Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.",
"id": "GHSA-cfg6-hjhr-wr3x",
"modified": "2026-07-14T18:32:07Z",
"published": "2026-07-14T18:32:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54122"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54122"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CFMR-FM5G-6FFW
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-50477"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:53Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-cfmr-fm5g-6ffw",
"modified": "2026-07-14T18:32:26Z",
"published": "2026-07-14T18:32:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50477"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50477"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"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.