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().
4578 vulnerabilities reference this CWE, most recent first.
GHSA-V76X-QFMC-M88P
Vulnerability from github – Published: 2023-08-02 06:30 – Updated: 2023-12-15 18:30
VLAI
Details
Under some circumstances, this weakness allows a user who has access to run the “ps” utility on a machine, the ability to write almost unlimited amounts of unfiltered data into the process heap.
Severity
{
"affected": [],
"aliases": [
"CVE-2023-4016"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-02T05:15:09Z",
"severity": "LOW"
},
"details": "Under some circumstances, this weakness allows a user who has access to run the \u201cps\u201d utility on a machine, the ability to write almost unlimited amounts of unfiltered data into the process heap.",
"id": "GHSA-v76x-qfmc-m88p",
"modified": "2023-12-15T18:30:27Z",
"published": "2023-08-02T06:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4016"
},
{
"type": "WEB",
"url": "https://gitlab.com/procps-ng/procps"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SUETRRT24OFGPYK6ACPM5VUGHNKH5CQ5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-V778-GJXX-9MJP
Vulnerability from github – Published: 2024-03-27 03:31 – Updated: 2025-11-04 21:31
VLAI
Details
A heap buffer overflow occurs in the dfs_v2 romfs filesystem RT-Thread through 5.0.2.
Severity
8.4 (High)
{
"affected": [],
"aliases": [
"CVE-2024-24335"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-27T03:15:11Z",
"severity": "HIGH"
},
"details": "A heap buffer overflow occurs in the dfs_v2 romfs filesystem RT-Thread through 5.0.2.",
"id": "GHSA-v778-gjxx-9mjp",
"modified": "2025-11-04T21:31:21Z",
"published": "2024-03-27T03:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-24335"
},
{
"type": "WEB",
"url": "https://github.com/RT-Thread/rt-thread/issues/8271"
},
{
"type": "WEB",
"url": "https://github.com/RT-Thread/rt-thread/pull/8278"
},
{
"type": "WEB",
"url": "https://github.com/hnsecurity/vulns/blob/main/HNS-2024-05-rt-thread.txt"
},
{
"type": "WEB",
"url": "https://seclists.org/fulldisclosure/2024/Mar/28"
},
{
"type": "WEB",
"url": "https://security.humanativaspa.it/multiple-vulnerabilities-in-rt-thread-rtos"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Mar/28"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/03/05/1"
}
],
"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-V79P-VGMV-RCC2
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-55033"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:14Z",
"severity": "HIGH"
},
"details": "Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally.",
"id": "GHSA-v79p-vgmv-rcc2",
"modified": "2026-07-14T18:32:32Z",
"published": "2026-07-14T18:32:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55033"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55033"
}
],
"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-V7C2-V7QP-Q5F4
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-2024-37319"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T17:15:19Z",
"severity": "HIGH"
},
"details": "SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability",
"id": "GHSA-v7c2-v7qp-q5f4",
"modified": "2024-07-09T18:30:50Z",
"published": "2024-07-09T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37319"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-37319"
}
],
"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-V7H6-WHHR-JV6V
Vulnerability from github – Published: 2022-05-27 00:00 – Updated: 2022-06-04 00:00
VLAI
Details
Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-1886"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-26T15:15:00Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.",
"id": "GHSA-v7h6-whhr-jv6v",
"modified": "2022-06-04T00:00:59Z",
"published": "2022-05-27T00:00:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1886"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/2a585c85013be22f59f184d49612074fd9b115d7"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/fa0ad526-b608-45b3-9ebc-f2b607834d6a"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TYNK6SDCMOLQJOI3B4AOE66P2G2IH4ZM"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202305-16"
}
],
"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-V7MM-74QC-MWRG
Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31
VLAI
Details
Kofax Power PDF PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. 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 PDF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21602.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-42038"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:15:36Z",
"severity": "HIGH"
},
"details": "Kofax Power PDF PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. 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 PDF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21602.",
"id": "GHSA-v7mm-74qc-mwrg",
"modified": "2024-05-03T03:31:00Z",
"published": "2024-05-03T03:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42038"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1394"
}
],
"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-V7RX-X7HP-VGJV
Vulnerability from github – Published: 2023-01-04 12:30 – Updated: 2023-01-11 03:30
VLAI
Details
In wlan driver, there is a possible missing bounds check. This could lead to local denial of service in wlan services.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-44427"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-04T10:15:00Z",
"severity": "MODERATE"
},
"details": "In wlan driver, there is a possible missing bounds check. This could lead to local denial of service in wlan services.",
"id": "GHSA-v7rx-x7hp-vgjv",
"modified": "2023-01-11T03:30:19Z",
"published": "2023-01-04T12:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-44427"
},
{
"type": "WEB",
"url": "https://www.unisoc.com/en_us/secy/announcementDetail/1610118225591336001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-V7WH-HFV4-55RX
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 execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-50313"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:29Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.",
"id": "GHSA-v7wh-hfv4-55rx",
"modified": "2026-07-14T18:32:15Z",
"published": "2026-07-14T18:32:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50313"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50313"
}
],
"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-V898-XG3C-W4RJ
Vulnerability from github – Published: 2026-04-20 21:31 – Updated: 2026-07-14 15:31
VLAI
Details
Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-5450"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-20T21:16:36Z",
"severity": "CRITICAL"
},
"details": "Calling the scanf family of functions with a %mc (malloc\u0027d character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.",
"id": "GHSA-v898-xg3c-w4rj",
"modified": "2026-07-14T15:31:51Z",
"published": "2026-04-20T21:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5450"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"type": "WEB",
"url": "https://inbox.sourceware.org/libc-announce/b11f0003-6ec1-4bd6-b9de-9e38a4efeca3@redhat.com/T/#u"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450"
}
],
"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-V8QM-G62M-CFPW
Vulnerability from github – Published: 2026-03-20 03:31 – Updated: 2026-03-20 15:31
VLAI
Details
Heap buffer overflow in ANGLE in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-4448"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-20T02:16:37Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in ANGLE in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-v8qm-g62m-cfpw",
"modified": "2026-03-20T15:31:11Z",
"published": "2026-03-20T03:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4448"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/486972661"
}
],
"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"
}
]
}
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.