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().
4097 vulnerabilities reference this CWE, most recent first.
GHSA-4HPJ-87MP-J2FQ
Vulnerability from github – Published: 2025-02-11 18:31 – Updated: 2025-02-11 18:31
VLAI
Details
Microsoft Digest Authentication Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-21368"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-11T18:15:35Z",
"severity": "HIGH"
},
"details": "Microsoft Digest Authentication Remote Code Execution Vulnerability",
"id": "GHSA-4hpj-87mp-j2fq",
"modified": "2025-02-11T18:31:38Z",
"published": "2025-02-11T18:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21368"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21368"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4HRJ-6FHW-HCVF
Vulnerability from github – Published: 2024-06-05 21:31 – Updated: 2024-06-05 21:31
VLAI
Details
An issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_nan_publish_get_nl_params(), there is no input validation check on hal_req->service_specific_info_len coming from userspace, which can lead to a heap overwrite.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-27374"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-05T19:15:13Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_nan_publish_get_nl_params(), there is no input validation check on hal_req-\u003eservice_specific_info_len coming from userspace, which can lead to a heap overwrite.",
"id": "GHSA-4hrj-6fhw-hcvf",
"modified": "2024-06-05T21:31:27Z",
"published": "2024-06-05T21:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27374"
},
{
"type": "WEB",
"url": "https://semiconductor.samsung.com/support/quality-support/product-security-updates"
}
],
"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-4J3X-R4J7-3JVG
Vulnerability from github – Published: 2025-06-06 18:30 – Updated: 2025-06-06 18:30
VLAI
Details
WOLFBOX Level 2 EV Charger tuya_svc_devos_activate_result_parse Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of WOLFBOX Level 2 EV Charger. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the secKey, localKey, stdTimeZone and devId parameters. 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 device. Was ZDI-CAN-26294.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-5750"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-06T16:15:30Z",
"severity": "HIGH"
},
"details": "WOLFBOX Level 2 EV Charger tuya_svc_devos_activate_result_parse Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of WOLFBOX Level 2 EV Charger. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of the secKey, localKey, stdTimeZone and devId parameters. 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 device. Was ZDI-CAN-26294.",
"id": "GHSA-4j3x-r4j7-3jvg",
"modified": "2025-06-06T18:30:32Z",
"published": "2025-06-06T18:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5750"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-329"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4J64-QFQF-JJGR
Vulnerability from github – Published: 2022-05-24 19:18 – Updated: 2025-11-03 21:30
VLAI
Details
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-3872"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-19T13:15:00Z",
"severity": "HIGH"
},
"details": "vim is vulnerable to Heap-based Buffer Overflow",
"id": "GHSA-4j64-qfqf-jjgr",
"modified": "2025-11-03T21:30:34Z",
"published": "2022-05-24T19:18:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3872"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/826bfe4bbd7594188e3d74d2539d9707b1c6a14b"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/c958013b-1c09-4939-92ca-92f50aa169e8"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
}
],
"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-4JR3-2X33-XQGG
Vulnerability from github – Published: 2021-12-02 00:00 – Updated: 2022-03-17 00:06
VLAI
Details
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-3984"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-01T11:15:00Z",
"severity": "HIGH"
},
"details": "vim is vulnerable to Heap-based Buffer Overflow",
"id": "GHSA-4jr3-2x33-xqgg",
"modified": "2022-03-17T00:06:40Z",
"published": "2021-12-02T00:00:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3984"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/2de9b7c7c8791da8853a9a7ca9c467867465b655"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/b114b5a2-18e2-49f0-b350-15994d71426a"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2022/01/15/1"
}
],
"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-4JRM-WF8F-QVQH
Vulnerability from github – Published: 2022-05-24 17:38 – Updated: 2022-10-07 00:01
VLAI
Details
There's a flaw in src/lib/openjp2/pi.c of openjpeg in versions prior to 2.4.0. If an attacker is able to provide untrusted input to openjpeg's conversion/encoding functionality, they could cause an out-of-bounds read. The highest impact of this flaw is to application availability.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-27845"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-05T18:15:00Z",
"severity": "MODERATE"
},
"details": "There\u0027s a flaw in src/lib/openjp2/pi.c of openjpeg in versions prior to 2.4.0. If an attacker is able to provide untrusted input to openjpeg\u0027s conversion/encoding functionality, they could cause an out-of-bounds read. The highest impact of this flaw is to application availability.",
"id": "GHSA-4jrm-wf8f-qvqh",
"modified": "2022-10-07T00:01:05Z",
"published": "2022-05-24T17:38:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27845"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1907523"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202101-29"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-4882"
},
{
"type": "WEB",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
}
],
"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-4M4F-3M29-78R8
Vulnerability from github – Published: 2022-05-24 17:36 – Updated: 2025-05-22 21:30
VLAI
Details
Medtronic MyCareLink Smart 25000 all versions are vulnerable when an attacker who gains auth runs a debug command, which is sent to the reader causing heap overflow in the MCL Smart Reader stack. A heap overflow allows attacker to remotely execute code on the MCL Smart Reader, could lead to control of device.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2020-25187"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-12-14T20:15:00Z",
"severity": "CRITICAL"
},
"details": "Medtronic MyCareLink Smart 25000 all versions are vulnerable when an attacker who gains auth runs a debug command, which is sent to the reader causing heap overflow in the MCL Smart Reader stack. A heap overflow allows attacker to remotely execute code on the MCL Smart Reader, could lead to control of device.",
"id": "GHSA-4m4f-3m29-78r8",
"modified": "2025-05-22T21:30:31Z",
"published": "2022-05-24T17:36:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25187"
},
{
"type": "WEB",
"url": "https://global.medtronic.com/xg-en/product-security/security-bulletins/mycarelink-smart-security-vulnerability-patch.html"
},
{
"type": "WEB",
"url": "https://us-cert.cisa.gov/ics/advisories/icsma-20-345-01"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-345-01"
}
],
"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-4MGH-6P2J-75QP
Vulnerability from github – Published: 2022-05-13 01:36 – Updated: 2022-05-13 01:36
VLAI
Details
A Heap-Based Buffer Overflow issue was discovered in Wecon Technologies LEVI Studio HMI Editor before 1.8.1. This vulnerability causes a buffer overflow when a maliciously crafted project file is run by the system.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2017-6037"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-04-27T00:59:00Z",
"severity": "HIGH"
},
"details": "A Heap-Based Buffer Overflow issue was discovered in Wecon Technologies LEVI Studio HMI Editor before 1.8.1. This vulnerability causes a buffer overflow when a maliciously crafted project file is run by the system.",
"id": "GHSA-4mgh-6p2j-75qp",
"modified": "2022-05-13T01:36:34Z",
"published": "2022-05-13T01:36:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6037"
},
{
"type": "WEB",
"url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-103-01"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/97639"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4MJ8-945C-Q57M
Vulnerability from github – Published: 2026-05-20 15:35 – Updated: 2026-05-21 18:33
VLAI
Details
MediaArea MediaInfoLib Channel Splitting heap-based buffer overflow vulnerability
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-22554"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-20T14:16:38Z",
"severity": "HIGH"
},
"details": "MediaArea MediaInfoLib Channel Splitting heap-based buffer overflow vulnerability",
"id": "GHSA-4mj8-945c-q57m",
"modified": "2026-05-21T18:33:07Z",
"published": "2026-05-20T15:35:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22554"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2026-2374"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2374"
}
],
"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-4MQ6-F26V-8F5G
Vulnerability from github – Published: 2026-05-12 18:30 – Updated: 2026-05-12 18:30
VLAI
Details
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-33841"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-12T18:17:06Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-4mq6-f26v-8f5g",
"modified": "2026-05-12T18:30:42Z",
"published": "2026-05-12T18:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33841"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33841"
}
],
"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"
}
]
}
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.