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().
5398 vulnerabilities reference this CWE, most recent first.
GHSA-GC4C-QF5M-FP82
Vulnerability from github – Published: 2026-06-01 15:30 – Updated: 2026-06-02 00:31A heap buffer overflow in the m2tsdmx_send_packet function (filters/dmx_m2ts.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.
{
"affected": [],
"aliases": [
"CVE-2025-55664"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-01T15:16:28Z",
"severity": "MODERATE"
},
"details": "A heap buffer overflow in the m2tsdmx_send_packet function (filters/dmx_m2ts.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.",
"id": "GHSA-gc4c-qf5m-fp82",
"modified": "2026-06-02T00:31:53Z",
"published": "2026-06-01T15:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55664"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/3310"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/commit/9bd6a72c9efc0513dfd33b87498afc7658dabd26"
},
{
"type": "WEB",
"url": "https://infosec.exchange/@sigdevel/116659245751279377"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/06/01/10"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GC6C-44MM-V3CJ
Vulnerability from github – Published: 2025-05-13 18:30 – Updated: 2025-05-13 18:30Illustrator versions 29.3, 28.7.5 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-2025-30330"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-13T18:15:39Z",
"severity": "HIGH"
},
"details": "Illustrator versions 29.3, 28.7.5 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-gc6c-44mm-v3cj",
"modified": "2025-05-13T18:30:58Z",
"published": "2025-05-13T18:30:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30330"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/illustrator/apsb25-43.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-GCGV-V5GF-C543
Vulnerability from github – Published: 2026-05-13 18:30 – Updated: 2026-08-25 15:32NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, for systems with Address Space Layout Randomization (ASLR ) disabled, code execution is possible. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
{
"affected": [],
"aliases": [
"CVE-2026-42945"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-13T16:16:50Z",
"severity": "CRITICAL"
},
"details": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module\u00a0module. This vulnerability exists when the rewrite\u00a0directive is followed by a rewrite, if, or set\u00a0directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, for systems with Address Space Layout Randomization (ASLR ) disabled, code execution is possible.\u00a0 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "GHSA-gcgv-v5gf-c543",
"modified": "2026-08-25T15:32:22Z",
"published": "2026-05-13T18:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42945"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17417"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:21275"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22382"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22383"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22388"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22389"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22390"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22393"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22394"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22396"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:58981"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-42945"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477116"
},
{
"type": "WEB",
"url": "https://depthfirst.com/nginx-rift"
},
{
"type": "WEB",
"url": "https://github.com/DepthFirstDisclosures/Nginx-Rift"
},
{
"type": "WEB",
"url": "https://my.f5.com/manage/s/article/K000161019"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42945.json"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17751"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17752"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17753"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17790"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17791"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17792"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17793"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17794"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:18029"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:18041"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:18063"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19159"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19371"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19372"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19374"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20442"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20444"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/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-GF82-22G8-PRC5
Vulnerability from github – Published: 2022-05-24 17:44 – Updated: 2024-04-04 03:04xbuf_format_converter, used as part of exif_read_data, was appending a terminating null character to the generated string, but was not using its standard append char function. As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
{
"affected": [],
"aliases": [
"CVE-2020-1917"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-03-10T16:15:00Z",
"severity": "CRITICAL"
},
"details": "xbuf_format_converter, used as part of exif_read_data, was appending a terminating null character to the generated string, but was not using its standard append char function. As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.",
"id": "GHSA-gf82-22g8-prc5",
"modified": "2024-04-04T03:04:45Z",
"published": "2022-05-24T17:44:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1917"
},
{
"type": "WEB",
"url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"
},
{
"type": "WEB",
"url": "https://hhvm.com/blog/2021/02/25/security-update.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:H",
"type": "CVSS_V3"
}
]
}
GHSA-GF8V-XGGH-3G7H
Vulnerability from github – Published: 2025-09-24 18:30 – Updated: 2025-09-24 18:30Heap buffer overflow in ANGLE in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2025-10502"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-24T17:15:39Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in ANGLE in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)",
"id": "GHSA-gf8v-xggh-3g7h",
"modified": "2025-09-24T18:30:31Z",
"published": "2025-09-24T18:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10502"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/438038775"
}
],
"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-GFMX-8JJ7-RVG5
Vulnerability from github – Published: 2022-09-17 00:00 – Updated: 2022-09-17 00:00Adobe Animate version 21.0.11 (and earlier) and 22.0.7 (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-2022-38411"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-16T17:15:00Z",
"severity": "HIGH"
},
"details": "Adobe Animate version 21.0.11 (and earlier) and 22.0.7 (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-gfmx-8jj7-rvg5",
"modified": "2022-09-17T00:00:34Z",
"published": "2022-09-17T00:00:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38411"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/animate/apsb22-54.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-GFPR-4FPP-G5QM
Vulnerability from github – Published: 2024-02-29 00:30 – Updated: 2024-08-01 15:31Buffer Overflow vulnerability in XNSoft NConvert 7.163 (for Windows x86) allows attackers to cause a denial of service via crafted xwd file.
{
"affected": [],
"aliases": [
"CVE-2024-22532"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-28T23:15:09Z",
"severity": "MODERATE"
},
"details": "Buffer Overflow vulnerability in XNSoft NConvert 7.163 (for Windows x86) allows attackers to cause a denial of service via crafted xwd file.",
"id": "GHSA-gfpr-4fpp-g5qm",
"modified": "2024-08-01T15:31:28Z",
"published": "2024-02-29T00:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-22532"
},
{
"type": "WEB",
"url": "https://github.com/pwndorei/CVE-2024-22532"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GG9F-FQ2J-9VV7
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-69463"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:11Z",
"severity": "CRITICAL"
},
"details": "Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-gg9f-fq2j-9vv7",
"modified": "2026-09-08T18:32:37Z",
"published": "2026-09-08T18:32:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69463"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69463"
}
],
"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-GGF5-P56J-CCC2
Vulnerability from github – Published: 2026-08-24 15:31 – Updated: 2026-08-24 21:33A heap-based buffer overflow vulnerability exists in Konami's Metal Gear Online 3, originating from improper validation of lobby data fields related to kicked players. The affected function processes a list of kicked player identifiers using the lobby data key "kick_num" to determine the number of entries, and individual kicked player IDs supplied via keys in the format "kicked_id_%i". The function does not validate that "kick_num" falls within the expected bounds. The game design limits matches to a maximum of 16 players, and the corresponding buffer for storing kicked player IDs is sized accordingly. If "kick_num" exceeds this limit, the function continues writing the provided player IDs past the end of the intended buffer and into adjacent memory regions. These adjacent regions contain Steam callback handler structures responsible for processing lobby data updates, lobby messages, and other related events. By supplying an oversized "kick_num" value and appropriate "kicked_id_%i" fields, an attacker can overwrite fields within the callback handler structures, including function pointers and callback argument values. Successful exploitation may enable control-flow hijacking, potentially allowing arbitrary code execution within the game process.
{
"affected": [],
"aliases": [
"CVE-2026-19874"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-24T15:16:37Z",
"severity": "CRITICAL"
},
"details": "A heap-based buffer overflow vulnerability exists in Konami\u0027s Metal Gear Online 3, originating from improper validation of lobby data fields related to kicked players. The affected function processes a list of kicked player identifiers using the lobby data key \"kick_num\" to determine the number of entries, and individual kicked player IDs supplied via keys in the format \"kicked_id_%i\". The function does not validate that \"kick_num\" falls within the expected bounds. The game design limits matches to a maximum of 16 players, and the corresponding buffer for storing kicked player IDs is sized accordingly. If \"kick_num\" exceeds this limit, the function continues writing the provided player IDs past the end of the intended buffer and into adjacent memory regions. These adjacent regions contain Steam callback handler structures responsible for processing lobby data updates, lobby messages, and other related events. By supplying an oversized \"kick_num\" value and appropriate \"kicked_id_%i\" fields, an attacker can overwrite fields within the callback handler structures, including function pointers and callback argument values. Successful exploitation may enable control-flow hijacking, potentially allowing arbitrary code execution within the game process.",
"id": "GHSA-ggf5-p56j-ccc2",
"modified": "2026-08-24T21:33:38Z",
"published": "2026-08-24T15:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19874"
},
{
"type": "WEB",
"url": "https://cwe.mitre.org/data/definitions/122.html"
},
{
"type": "WEB",
"url": "https://kb.cert.org/vuls/id/728712"
},
{
"type": "WEB",
"url": "https://www.kb.cert.org/vuls/id/728712"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GGF5-X436-R699
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-50489"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:55Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-ggf5-x436-r699",
"modified": "2026-07-14T18:32:27Z",
"published": "2026-07-14T18:32:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50489"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50489"
}
],
"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
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.