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().
5426 vulnerabilities reference this CWE, most recent first.
GHSA-2JQV-6GJJ-98R2
Vulnerability from github – Published: 2025-01-14 18:32 – Updated: 2025-01-14 18:32
VLAI
Details
Windows Telephony Service Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-21417"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:16:05Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-2jqv-6gjj-98r2",
"modified": "2025-01-14T18:32:06Z",
"published": "2025-01-14T18:32:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21417"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21417"
}
],
"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-2JR3-VFC4-XRM2
Vulnerability from github – Published: 2024-04-09 18:30 – Updated: 2024-04-09 18:30
VLAI
Details
Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-28937"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-09T17:15:55Z",
"severity": "HIGH"
},
"details": "Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability",
"id": "GHSA-2jr3-vfc4-xrm2",
"modified": "2024-04-09T18:30:27Z",
"published": "2024-04-09T18:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-28937"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-28937"
}
],
"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-2JVH-JVQ5-35JQ
Vulnerability from github – Published: 2026-09-16 15:31 – Updated: 2026-09-16 15:31
VLAI
Details
MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-89028"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-16T14:17:12Z",
"severity": "HIGH"
},
"details": "MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.",
"id": "GHSA-2jvh-jvq5-35jq",
"modified": "2026-09-16T15:31:10Z",
"published": "2026-09-16T15:31:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89028"
},
{
"type": "WEB",
"url": "https://forum.mikrotik.com/t/7-24-stable-is-released/272381"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/mikrotik-routeros-heap-corruption-via-smb1-sessionsetupandx"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/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-2M58-VM8W-CPWW
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32
VLAI
Details
Heap-based buffer overflow in Windows DCOM Server allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-69284"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:18:43Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows DCOM Server allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-2m58-vm8w-cpww",
"modified": "2026-09-08T18:32:19Z",
"published": "2026-09-08T18:32:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69284"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69284"
}
],
"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-2MJC-29F4-VC2R
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32
VLAI
Details
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-69583"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:28Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-2mjc-29f4-vc2r",
"modified": "2026-09-08T18:32:47Z",
"published": "2026-09-08T18:32:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69583"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69583"
}
],
"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-2P5V-755J-54F5
Vulnerability from github – Published: 2025-01-14 18:32 – Updated: 2025-01-14 18:32
VLAI
Details
Windows Telephony Service Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-21339"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:15:59Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-2p5v-755j-54f5",
"modified": "2025-01-14T18:32:05Z",
"published": "2025-01-14T18:32:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21339"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21339"
}
],
"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-2P7G-GCVC-7P6M
Vulnerability from github – Published: 2026-09-12 18:30 – Updated: 2026-09-12 18:30
VLAI
Details
Freeciv versions before 3.2.6 contain a heap buffer overflow in worklist_load() when processing savegame files with declared worklist lengths exceeding the fixed array bound of 64 elements. Attackers can craft malicious savegame files that write past the entries array into adjacent heap-allocated struct fields, potentially corrupting memory when a user or server operator loads the file.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-90556"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-12T18:16:44Z",
"severity": "HIGH"
},
"details": "Freeciv versions before 3.2.6 contain a heap buffer overflow in worklist_load() when processing savegame files with declared worklist lengths exceeding the fixed array bound of 64 elements. Attackers can craft malicious savegame files that write past the entries array into adjacent heap-allocated struct fields, potentially corrupting memory when a user or server operator loads the file.",
"id": "GHSA-2p7g-gcvc-7p6m",
"modified": "2026-09-12T18:30:22Z",
"published": "2026-09-12T18:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90556"
},
{
"type": "WEB",
"url": "https://github.com/freeciv/freeciv/commit/75ecde3e86ddf2fe775768450e9a290a4f4d4387"
},
{
"type": "WEB",
"url": "https://github.com/freeciv/freeciv"
},
{
"type": "WEB",
"url": "https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L788"
},
{
"type": "WEB",
"url": "https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L964"
},
{
"type": "WEB",
"url": "https://github.com/freeciv/freeciv/releases/tag/R3_2_6"
},
{
"type": "WEB",
"url": "https://redmine.freeciv.org/issues/2161"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/freeciv-before-3.2.6-heap-buffer-overflow-via-worklist-load"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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-2P7G-V48X-6M2C
Vulnerability from github – Published: 2025-01-14 18:32 – Updated: 2025-01-14 18:32
VLAI
Details
Windows Telephony Service Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-21286"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:15:49Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-2p7g-v48x-6m2c",
"modified": "2025-01-14T18:32:03Z",
"published": "2025-01-14T18:32:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21286"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21286"
}
],
"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-2P7M-6JHQ-26CM
Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-09-14 15:32
VLAI
Details
Heap-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.
Severity
7.5 (High)
{
"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": "2026-09-14T15:32:11Z",
"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/errata/RHSA-2026:41906"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:42828"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:47046"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:53371"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:56868"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:56869"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:62165"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:66323"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:67152"
},
{
"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 19:00
VLAI
Details
A 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.
Severity
7.8 (High)
{
"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"
}
]
}
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.