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().
5249 vulnerabilities reference this CWE, most recent first.
GHSA-MR2W-MH85-756H
Vulnerability from github – Published: 2026-08-11 18:31 – Updated: 2026-08-11 18:31
VLAI
Details
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-61930"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-11T17:18:15Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-mr2w-mh85-756h",
"modified": "2026-08-11T18:31:10Z",
"published": "2026-08-11T18:31:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61930"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61930"
}
],
"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-MR7W-JW25-XCGJ
Vulnerability from github – Published: 2026-09-08 21:34 – Updated: 2026-09-10 15:33
VLAI
Details
In a2dp_vendor_opus_decoder_decode_packet of a2dp_vendor_opus_decoder.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-45515"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T19:17:57Z",
"severity": "HIGH"
},
"details": "In a2dp_vendor_opus_decoder_decode_packet of a2dp_vendor_opus_decoder.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-mr7w-jw25-xcgj",
"modified": "2026-09-10T15:33:00Z",
"published": "2026-09-08T21:34:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45515"
},
{
"type": "WEB",
"url": "https://source.android.com/docs/security/bulletin/2026/2026-09-01"
}
],
"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-MRJW-2VH7-3RF9
Vulnerability from github – Published: 2024-07-09 18:30 – Updated: 2024-07-09 18:30
VLAI
Details
SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-37327"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T17:15:21Z",
"severity": "HIGH"
},
"details": "SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability",
"id": "GHSA-mrjw-2vh7-3rf9",
"modified": "2024-07-09T18:30:50Z",
"published": "2024-07-09T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37327"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-37327"
}
],
"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-MRMP-MWVP-CMCX
Vulnerability from github – Published: 2025-08-26 00:31 – Updated: 2025-11-03 21:34
VLAI
Details
A memory corruption vulnerability exists in the PCX Image Decoding functionality of the SAIL Image Decoding Library v0.9.8. When decoding the image data from a specially crafted .pcx file, a heap-based buffer overflow can occur which allows for remote code execution. An attacker will need to convince the library to read a file to trigger this vulnerability.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-35984"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-25T15:15:39Z",
"severity": "HIGH"
},
"details": "A memory corruption vulnerability exists in the PCX Image Decoding functionality of the SAIL Image Decoding Library v0.9.8. When decoding the image data from a specially crafted .pcx file, a heap-based buffer overflow can occur which allows for remote code execution. An attacker will need to convince the library to read a file to trigger this vulnerability.",
"id": "GHSA-mrmp-mwvp-cmcx",
"modified": "2025-11-03T21:34:24Z",
"published": "2025-08-26T00:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-35984"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2217"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2217"
}
],
"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-MRR3-F59G-2946
Vulnerability from github – Published: 2022-05-24 19:09 – Updated: 2026-05-29 15:30
VLAI
Details
CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2021-33485"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-03T16:15:00Z",
"severity": "CRITICAL"
},
"details": "CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.",
"id": "GHSA-mrr3-f59g-2946",
"modified": "2026-05-29T15:30:24Z",
"published": "2022-05-24T19:09:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33485"
},
{
"type": "WEB",
"url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14805\u0026token=f0b86f99bb302ddd4aadec483aed5f5d3fddbf1a\u0026download="
}
],
"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-MRXH-R27F-FJGJ
Vulnerability from github – Published: 2025-10-14 18:30 – Updated: 2025-10-14 18:30
VLAI
Details
Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-59255"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-14T17:16:07Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-mrxh-r27f-fjgj",
"modified": "2025-10-14T18:30:35Z",
"published": "2025-10-14T18:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59255"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59255"
}
],
"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-MRXR-G8PQ-3495
Vulnerability from github – Published: 2024-11-12 18:30 – Updated: 2024-11-12 18:30
VLAI
Details
SQL Server Native Client Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-48995"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-12T18:15:36Z",
"severity": "HIGH"
},
"details": "SQL Server Native Client Remote Code Execution Vulnerability",
"id": "GHSA-mrxr-g8pq-3495",
"modified": "2024-11-12T18:30:59Z",
"published": "2024-11-12T18:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-48995"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-48995"
}
],
"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-MV9J-3963-RW7W
Vulnerability from github – Published: 2026-08-11 18:31 – Updated: 2026-08-11 18:31
VLAI
Details
Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-70304"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-11T17:19:07Z",
"severity": "MODERATE"
},
"details": "Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-mv9j-3963-rw7w",
"modified": "2026-08-11T18:31:46Z",
"published": "2026-08-11T18:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70304"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70304"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-MVF4-PJ98-2R3V
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack.
Severity
6.8 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-50668"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:00Z",
"severity": "MODERATE"
},
"details": "Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack.",
"id": "GHSA-mvf4-pj98-2r3v",
"modified": "2026-07-14T18:32:29Z",
"published": "2026-07-14T18:32:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50668"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50668"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-MVF6-42FG-9RCW
Vulnerability from github – Published: 2026-08-11 18:31 – Updated: 2026-08-11 18:31
VLAI
Details
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-63518"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-11T17:18:47Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.",
"id": "GHSA-mvf6-42fg-9rcw",
"modified": "2026-08-11T18:31:31Z",
"published": "2026-08-11T18:31:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63518"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63518"
}
],
"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"
}
]
}
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.