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().
6273 vulnerabilities reference this CWE, most recent first.
GHSA-HC96-6V44-HC7P
Vulnerability from github – Published: 2026-10-13 21:34 – Updated: 2026-10-13 21:34Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-77496"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:19:53Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-hc96-6v44-hc7p",
"modified": "2026-10-13T21:34:23Z",
"published": "2026-10-13T21:34:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77496"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77496"
}
],
"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-HCC9-H975-PVC2
Vulnerability from github – Published: 2026-05-20 21:31 – Updated: 2026-08-04 15:32A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.
{
"affected": [],
"aliases": [
"CVE-2026-8631"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-20T21:16:18Z",
"severity": "CRITICAL"
},
"details": "A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.",
"id": "GHSA-hcc9-h975-pvc2",
"modified": "2026-08-04T15:32:04Z",
"published": "2026-05-20T21:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8631"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26228"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26297"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26335"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48171"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48586"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48603"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48606"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48959"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48960"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:48961"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-8631"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480300"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8631.json"
},
{
"type": "WEB",
"url": "https://support.hp.com/us-en/document/ish_14942099-14942126-16/hpsbpi04118"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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-HCF2-J2GM-MW78
Vulnerability from github – Published: 2026-10-13 21:34 – Updated: 2026-10-13 21:34Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-83757"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:20:22Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-hcf2-j2gm-mw78",
"modified": "2026-10-13T21:34:49Z",
"published": "2026-10-13T21:34:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83757"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83757"
}
],
"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-HF44-FVQ2-MQP7
Vulnerability from github – Published: 2022-05-24 16:58 – Updated: 2024-04-04 02:14A specifically crafted PDF file can lead to a heap corruption when opened in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.
{
"affected": [],
"aliases": [
"CVE-2019-5050"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-09T21:15:00Z",
"severity": "HIGH"
},
"details": "A specifically crafted PDF file can lead to a heap corruption when opened in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.",
"id": "GHSA-hf44-fvq2-mqp7",
"modified": "2024-04-04T02:14:39Z",
"published": "2022-05-24T16:58:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5050"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0819"
}
],
"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-HFGV-9CQ7-QP2V
Vulnerability from github – Published: 2025-09-04 12:30 – Updated: 2025-09-04 15:30In draw_surface_image() of abl/android/lib/draw/draw.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege via USB fastboot, after a bootloader unlock, with no additional execution privileges needed. User interaction is needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2025-36907"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-04T10:42:31Z",
"severity": "HIGH"
},
"details": "In draw_surface_image() of abl/android/lib/draw/draw.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege via USB fastboot, after a bootloader unlock, with no additional execution privileges needed. User interaction is needed for exploitation.",
"id": "GHSA-hfgv-9cq7-qp2v",
"modified": "2025-09-04T15:30:28Z",
"published": "2025-09-04T12:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36907"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2025-09-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HFM8-6VMJ-77JG
Vulnerability from github – Published: 2026-10-13 21:34 – Updated: 2026-10-13 21:34Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.
{
"affected": [],
"aliases": [
"CVE-2026-83795"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:20:29Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.",
"id": "GHSA-hfm8-6vmj-77jg",
"modified": "2026-10-13T21:34:54Z",
"published": "2026-10-13T21:34:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83795"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83795"
}
],
"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-HFQ5-QCRC-976G
Vulnerability from github – Published: 2026-10-13 21:35 – Updated: 2026-10-13 21:35Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-83867"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:20:36Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-hfq5-qcrc-976g",
"modified": "2026-10-13T21:35:00Z",
"published": "2026-10-13T21:35:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83867"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83867"
}
],
"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-HFRJ-29VH-PCF2
Vulnerability from github – Published: 2026-07-08 21:30 – Updated: 2026-07-08 21:30Z39.50 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
{
"affected": [],
"aliases": [
"CVE-2026-15170"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-08T21:16:47Z",
"severity": "MODERATE"
},
"details": "Z39.50 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service",
"id": "GHSA-hfrj-29vh-pcf2",
"modified": "2026-07-08T21:30:30Z",
"published": "2026-07-08T21:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15170"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21397"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2026-58.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-HFXM-R6G6-PVHW
Vulnerability from github – Published: 2026-10-13 21:36 – Updated: 2026-10-13 21:36Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-88202"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:21:41Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-hfxm-r6g6-pvhw",
"modified": "2026-10-13T21:36:53Z",
"published": "2026-10-13T21:36:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88202"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88202"
}
],
"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-HG2W-QC44-HJCW
Vulnerability from github – Published: 2025-09-08 15:37 – Updated: 2025-09-08 15:37A vulnerability (CVE-2025-21172) exists in msdia140.dll due to integer overflow and heap-based overflow.
Per CWE-122: Heap-based Buffer Overflow, 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().
Per CWE-190: Integer Overflow or Wraparound, is when a product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.
{
"affected": [],
"aliases": [
"CVE-2025-36853"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-08T14:15:34Z",
"severity": "HIGH"
},
"details": "A vulnerability (CVE-2025-21172) exists in msdia140.dll\u00a0due to integer overflow and heap-based overflow.\n\n Per CWE-122: Heap-based Buffer Overflow, 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().\u200d\n\n Per CWE-190: Integer Overflow or Wraparound, is when a product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.\n\n NOTE: This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.",
"id": "GHSA-hg2w-qc44-hjcw",
"modified": "2025-09-08T15:37:44Z",
"published": "2025-09-08T15:37:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36853"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21172"
},
{
"type": "WEB",
"url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21172"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/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
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
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
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
Implement and perform bounds checking on input.
Mitigation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
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.