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().
4093 vulnerabilities reference this CWE, most recent first.
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"
}
]
}
GHSA-V8QR-GPX9-78RM
Vulnerability from github – Published: 2025-09-08 15:37 – Updated: 2025-11-05 00:31
VLAI
Details
JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2025-40928"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-08T15:15:35Z",
"severity": "HIGH"
},
"details": "JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact",
"id": "GHSA-v8qr-gpx9-78rm",
"modified": "2025-11-05T00:31:26Z",
"published": "2025-09-08T15:37:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40928"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00033.html"
},
{
"type": "WEB",
"url": "https://metacpan.org/release/MLEHMANN/JSON-XS-4.03/source/XS.xs#L256"
},
{
"type": "WEB",
"url": "https://security.metacpan.org/patches/J/JSON-XS/4.03/CVE-2025-40928-r1.patch"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/09/08/2"
}
],
"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-V8V5-8MM8-3J8P
Vulnerability from github – Published: 2025-07-10 12:31 – Updated: 2026-04-21 00:32
VLAI
Details
A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-32990"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-10T10:15:33Z",
"severity": "MODERATE"
},
"details": "A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.",
"id": "GHSA-v8v5-8mm8-3j8p",
"modified": "2026-04-21T00:32:13Z",
"published": "2025-07-10T12:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-32990"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:16115"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:16116"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:17181"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:17348"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:17361"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:17415"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:19088"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:22529"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7477"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2025-32990"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2359620"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00005.html"
},
{
"type": "WEB",
"url": "https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/07/11/3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-V8X8-32R8-5X52
Vulnerability from github – Published: 2023-04-22 18:30 – Updated: 2023-04-22 18:30
VLAI
Details
A vulnerability, which was classified as critical, was found in PoDoFo 0.10.0. Affected is the function readXRefStreamEntry of the file PdfXRefStreamParserObject.cpp. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 535a786f124b739e3c857529cecc29e4eeb79778. It is recommended to apply a patch to fix this issue. VDB-227226 is the identifier assigned to this vulnerability.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-2241"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-22T16:15:42Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as critical, was found in PoDoFo 0.10.0. Affected is the function readXRefStreamEntry of the file PdfXRefStreamParserObject.cpp. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 535a786f124b739e3c857529cecc29e4eeb79778. It is recommended to apply a patch to fix this issue. VDB-227226 is the identifier assigned to this vulnerability.",
"id": "GHSA-v8x8-32r8-5x52",
"modified": "2023-04-22T18:30:27Z",
"published": "2023-04-22T18:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2241"
},
{
"type": "WEB",
"url": "https://github.com/podofo/podofo/issues/69"
},
{
"type": "WEB",
"url": "https://github.com/podofo/podofo/commit/535a786f124b739e3c857529cecc29e4eeb79778"
},
{
"type": "WEB",
"url": "https://github.com/podofo/podofo/files/11260976/poc-file.zip"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.227226"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.227226"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-V986-MP4G-45CW
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-55017"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:12Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.",
"id": "GHSA-v986-mp4g-45cw",
"modified": "2026-07-14T18:32:31Z",
"published": "2026-07-14T18:32:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55017"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55017"
}
],
"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-V998-VFGC-JVVP
Vulnerability from github – Published: 2024-10-08 18:33 – Updated: 2024-10-08 18:33
VLAI
Details
Windows Mobile Broadband Driver Remote Code Execution Vulnerability
Severity
6.8 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-43526"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-08T18:15:16Z",
"severity": "MODERATE"
},
"details": "Windows Mobile Broadband Driver Remote Code Execution Vulnerability",
"id": "GHSA-v998-vfgc-jvvp",
"modified": "2024-10-08T18:33:15Z",
"published": "2024-10-08T18:33:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43526"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43526"
}
],
"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-V9WQ-479P-2JWM
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-2025-21306"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:15:53Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-v9wq-479p-2jwm",
"modified": "2025-01-14T18:32:04Z",
"published": "2025-01-14T18:32:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21306"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21306"
}
],
"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.