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-2P7M-6JHQ-26CM
Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-07-16 12:32Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes the issue.
{
"affected": [],
"aliases": [
"CVE-2026-42536"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-08T16:16:39Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow vulnerability in Apache HTTP Server with\u00a0mod_xml2enc, xml2StartParse, and untrusted content\n\nThis issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.\n\nUsers are recommended to upgrade to version 2.4.68, which fixes the issue.",
"id": "GHSA-2p7m-6jhq-26cm",
"modified": "2026-07-16T12:32:24Z",
"published": "2026-06-08T18:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42536"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:25042"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34109"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-42536"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486411"
},
{
"type": "WEB",
"url": "https://httpd.apache.org/security/vulnerabilities_24.html"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42536.json"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/06/08/9"
}
],
"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-2P92-5RP8-53V2
Vulnerability from github – Published: 2022-11-08 12:00 – Updated: 2022-11-08 19:00A vulnerability has been identified in JT2Go (All versions < V14.1.0.4), Teamcenter Visualization V13.3 (All versions < V13.3.0.7), Teamcenter Visualization V13.3 (All versions >= V13.3.0.7), Teamcenter Visualization V14.0 (All versions < V14.0.0.3), Teamcenter Visualization V14.1 (All versions < V14.1.0.4). The affected application is vulnerable to fixed-length heap-based buffer while parsing specially crafted TIF files. An attacker could leverage this vulnerability to execute code in the context of the current process.
{
"affected": [],
"aliases": [
"CVE-2022-39136"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-08T11:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in JT2Go (All versions \u003c V14.1.0.4), Teamcenter Visualization V13.3 (All versions \u003c V13.3.0.7), Teamcenter Visualization V13.3 (All versions \u003e= V13.3.0.7), Teamcenter Visualization V14.0 (All versions \u003c V14.0.0.3), Teamcenter Visualization V14.1 (All versions \u003c V14.1.0.4). The affected application is vulnerable to fixed-length heap-based buffer while parsing specially crafted TIF files. An attacker could leverage this vulnerability to execute code in the context of the current process.",
"id": "GHSA-2p92-5rp8-53v2",
"modified": "2022-11-08T19:00:22Z",
"published": "2022-11-08T12:00:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39136"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-120378.pdf"
}
],
"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-2PG5-Q29V-6RXQ
Vulnerability from github – Published: 2024-04-09 18:30 – Updated: 2024-04-09 18:30Microsoft WDAC SQL Server ODBC Driver Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-26214"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-09T17:15:40Z",
"severity": "HIGH"
},
"details": "Microsoft WDAC SQL Server ODBC Driver Remote Code Execution Vulnerability",
"id": "GHSA-2pg5-q29v-6rxq",
"modified": "2024-04-09T18:30:25Z",
"published": "2024-04-09T18:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26214"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26214"
}
],
"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-2Q8V-6Q3V-PRJC
Vulnerability from github – Published: 2026-03-16 15:30 – Updated: 2026-03-16 15:30Philips Hue Bridge Zigbee Stack Custom Command Handler Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. User interaction is required to exploit this vulnerability in that the user must initiate the device pairing process.
The specific flaw exists within the handling of custom Zigbee ZCL frames in the Model Info download functionality. The issue results from the lack of proper validation of the size of data prior to copying it to a fixed-size heap buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-28276.
{
"affected": [],
"aliases": [
"CVE-2026-3555"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-16T14:19:48Z",
"severity": "HIGH"
},
"details": "Philips Hue Bridge Zigbee Stack Custom Command Handler Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. User interaction is required to exploit this vulnerability in that the user must initiate the device pairing process.\n\nThe specific flaw exists within the handling of custom Zigbee ZCL frames in the Model Info download functionality. The issue results from the lack of proper validation of the size of data prior to copying it to a fixed-size heap buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-28276.",
"id": "GHSA-2q8v-6q3v-prjc",
"modified": "2026-03-16T15:30:44Z",
"published": "2026-03-16T15:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3555"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-153"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2QJ2-G5Q3-XW3G
Vulnerability from github – Published: 2024-11-22 21:32 – Updated: 2024-11-22 21:32IrfanView ECW File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 ECW 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-23971.
{
"affected": [],
"aliases": [
"CVE-2024-11513"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T21:15:09Z",
"severity": "HIGH"
},
"details": "IrfanView ECW File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 ECW 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-23971.",
"id": "GHSA-2qj2-g5q3-xw3g",
"modified": "2024-11-22T21:32:17Z",
"published": "2024-11-22T21:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-11513"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1601"
}
],
"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-2QPF-4QW3-28FJ
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-07-08 18:31Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2025-49721"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T17:15:59Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to elevate privileges locally.",
"id": "GHSA-2qpf-4qw3-28fj",
"modified": "2025-07-08T18:31:49Z",
"published": "2025-07-08T18:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49721"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49721"
}
],
"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-2QXP-F77X-JPCF
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-10-22 00:33Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2025-24993"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T17:16:35Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.",
"id": "GHSA-2qxp-f77x-jpcf",
"modified": "2025-10-22T00:33:15Z",
"published": "2025-03-11T18:32:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24993"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24993"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24993"
}
],
"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-2R2X-QVVF-3RJR
Vulnerability from github – Published: 2022-04-15 00:00 – Updated: 2022-04-22 00:00Two heap-based buffer overflow vulnerabilities exist in the TIFF parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger these vulnerabilities. Placeholder
{
"affected": [],
"aliases": [
"CVE-2021-21944"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-14T20:15:00Z",
"severity": "HIGH"
},
"details": "Two heap-based buffer overflow vulnerabilities exist in the TIFF parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger these vulnerabilities. Placeholder",
"id": "GHSA-2r2x-qvvf-3rjr",
"modified": "2022-04-22T00:00:51Z",
"published": "2022-04-15T00:00:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21944"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1374"
}
],
"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-2R37-G5Q9-QRFC
Vulnerability from github – Published: 2025-04-15 21:31 – Updated: 2025-08-19 15:31A maliciously crafted DWG file, when parsed through Autodesk Revit, can cause a Stack-Based Buffer Overflow vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process.
{
"affected": [],
"aliases": [
"CVE-2025-2497"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-15T21:15:56Z",
"severity": "HIGH"
},
"details": "A maliciously crafted DWG file, when parsed through Autodesk Revit, can cause a Stack-Based Buffer Overflow vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process.",
"id": "GHSA-2r37-g5q9-qrfc",
"modified": "2025-08-19T15:31:20Z",
"published": "2025-04-15T21:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2497"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/products/autodesk-access/overview"
},
{
"type": "WEB",
"url": "https://www.autodesk.com/trust/security-advisories/adsk-sa-2025-0005"
}
],
"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-2R4P-CP55-G7GF
Vulnerability from github – Published: 2025-10-29 21:30 – Updated: 2025-10-29 21:30Ashlar-Vellum Cobalt CO File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 CO 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-26628.
{
"affected": [],
"aliases": [
"CVE-2025-11464"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-29T20:15:36Z",
"severity": "HIGH"
},
"details": "Ashlar-Vellum Cobalt CO File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 CO 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-26628.",
"id": "GHSA-2r4p-cp55-g7gf",
"modified": "2025-10-29T21:30:33Z",
"published": "2025-10-29T21:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11464"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-955"
}
],
"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"
}
]
}
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.