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().
4096 vulnerabilities reference this CWE, most recent first.
GHSA-77MR-3X8W-8F7F
Vulnerability from github – Published: 2024-11-23 03:31 – Updated: 2024-11-23 03:31Trimble SketchUp Viewer SKP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Trimble SketchUp Viewer. 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 SKP 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-19575.
{
"affected": [],
"aliases": [
"CVE-2024-7508"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T22:15:18Z",
"severity": "HIGH"
},
"details": "Trimble SketchUp Viewer SKP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Trimble SketchUp Viewer. 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 SKP 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-19575.",
"id": "GHSA-77mr-3x8w-8f7f",
"modified": "2024-11-23T03:31:58Z",
"published": "2024-11-23T03:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7508"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1054"
}
],
"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-77VW-JRXP-2648
Vulnerability from github – Published: 2024-02-09 15:31 – Updated: 2024-02-15 06:31An issue in the imlib_free_image_and_decache function of imlib2 v1.9.1 allows attackers to cause a heap buffer overflow via parsing a crafted image.
{
"affected": [],
"aliases": [
"CVE-2024-25448"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-09T15:15:09Z",
"severity": "HIGH"
},
"details": "An issue in the imlib_free_image_and_decache function of imlib2 v1.9.1 allows attackers to cause a heap buffer overflow via parsing a crafted image.",
"id": "GHSA-77vw-jrxp-2648",
"modified": "2024-02-15T06:31:35Z",
"published": "2024-02-09T15:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25448"
},
{
"type": "WEB",
"url": "https://github.com/derf/feh/issues/711"
},
{
"type": "WEB",
"url": "https://git.enlightenment.org/old/legacy-imlib2/issues/20"
}
],
"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-77WP-P4V3-XGJ7
Vulnerability from github – Published: 2025-05-30 06:30 – Updated: 2025-05-31 00:30hdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5VM_memcpyvv function.
{
"affected": [],
"aliases": [
"CVE-2025-44904"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-30T04:15:32Z",
"severity": "HIGH"
},
"details": "hdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5VM_memcpyvv function.",
"id": "GHSA-77wp-p4v3-xgj7",
"modified": "2025-05-31T00:30:28Z",
"published": "2025-05-30T06:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-44904"
},
{
"type": "WEB",
"url": "https://github.com/madao123123/crash_report/blob/main/hdf5_poc/hdf5_poc1.md"
}
],
"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-785Q-PVW8-V82F
Vulnerability from github – Published: 2026-07-01 00:34 – Updated: 2026-07-01 18:31Inappropriate implementation in XML in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-13835"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-30T23:16:58Z",
"severity": "HIGH"
},
"details": "Inappropriate implementation in XML in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-785q-pvw8-v82f",
"modified": "2026-07-01T18:31:29Z",
"published": "2026-07-01T00:34:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13835"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/514338102"
}
],
"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-78JW-WW3G-9WP7
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-07-13 15:31NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
{
"affected": [],
"aliases": [
"CVE-2026-42055"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-131",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T15:16:50Z",
"severity": "CRITICAL"
},
"details": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module\u00a0and ngx_http_grpc_module\u00a0modules. This vulnerability exists when the proxy_http_version to 2\u00a0or grpc_pass\u00a0directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers\u00a0directive is set to off, and the large_client_header_buffers\u00a0directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "GHSA-78jw-ww3g-9wp7",
"modified": "2026-07-13T15:31:39Z",
"published": "2026-06-17T18:35:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42055"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27197"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36331"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36364"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36618"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36639"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:38847"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-42055"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2489866"
},
{
"type": "WEB",
"url": "https://my.f5.com/manage/s/article/K000161584"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42055.json"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/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-794F-V4RM-X7R5
Vulnerability from github – Published: 2025-04-11 09:30 – Updated: 2025-04-25 18:31There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to QTextMarkdownImporter to trigger the overflow.This issue affects Qt from 6.8.0 to 6.8.4. Versions up to 6.6.0 are known to be unaffected, and the fix is in 6.8.4 and later.
{
"affected": [],
"aliases": [
"CVE-2025-3512"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-11T08:15:15Z",
"severity": "MODERATE"
},
"details": "There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to QTextMarkdownImporter to trigger the overflow.This issue affects Qt from 6.8.0 to 6.8.4. Versions up to 6.6.0 are known to be unaffected, and the fix is in 6.8.4 and later.",
"id": "GHSA-794f-v4rm-x7r5",
"modified": "2025-04-25T18:31:10Z",
"published": "2025-04-11T09:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3512"
},
{
"type": "WEB",
"url": "https://codereview.qt-project.org/c/qt/qtbase/+/635546"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/04/24/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/04/24/5"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/04/24/6"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/04/25/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/04/25/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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:Clear",
"type": "CVSS_V4"
}
]
}
GHSA-79CP-QRF9-6HV3
Vulnerability from github – Published: 2026-06-09 18:30 – Updated: 2026-06-09 18:30Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-42993"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T17:17:15Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-79cp-qrf9-6hv3",
"modified": "2026-06-09T18:30:46Z",
"published": "2026-06-09T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42993"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42993"
}
],
"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"
}
]
}
GHSA-79GC-6J6C-PF3R
Vulnerability from github – Published: 2024-06-11 21:32 – Updated: 2024-07-03 18:44libiec61850 v1.5 was discovered to contain a heap overflow via the BerEncoder_encodeLength function at /asn1/ber_encoder.c.
{
"affected": [],
"aliases": [
"CVE-2024-36702"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-11T19:16:07Z",
"severity": "HIGH"
},
"details": "libiec61850 v1.5 was discovered to contain a heap overflow via the BerEncoder_encodeLength function at /asn1/ber_encoder.c.",
"id": "GHSA-79gc-6j6c-pf3r",
"modified": "2024-07-03T18:44:50Z",
"published": "2024-06-11T21:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-36702"
},
{
"type": "WEB",
"url": "https://github.com/mz-automation/libiec61850/issues/505"
},
{
"type": "WEB",
"url": "https://github.com/mz-automation/libiec61850"
},
{
"type": "WEB",
"url": "http://libiec61850.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-79M6-3VJ5-MRF7
Vulnerability from github – Published: 2024-06-11 18:30 – Updated: 2024-06-11 18:30Windows OLE Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-30077"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-11T17:15:54Z",
"severity": "HIGH"
},
"details": "Windows OLE Remote Code Execution Vulnerability",
"id": "GHSA-79m6-3vj5-mrf7",
"modified": "2024-06-11T18:30:49Z",
"published": "2024-06-11T18:30:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30077"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30077"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-79QR-9MF7-FR3G
Vulnerability from github – Published: 2024-02-29 03:33 – Updated: 2025-11-04 00:30texlive-bin commit c515e was discovered to contain heap buffer overflow via the function ttfLoadHDMX:ttfdump. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted TTF file.
{
"affected": [],
"aliases": [
"CVE-2024-25262"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-29T01:44:15Z",
"severity": "HIGH"
},
"details": "texlive-bin commit c515e was discovered to contain heap buffer overflow via the function ttfLoadHDMX:ttfdump. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted TTF file.",
"id": "GHSA-79qr-9mf7-fr3g",
"modified": "2025-11-04T00:30:48Z",
"published": "2024-02-29T03:33:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25262"
},
{
"type": "WEB",
"url": "https://bugs.launchpad.net/ubuntu/+source/texlive-bin/+bug/2047912"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00032.html"
},
{
"type": "WEB",
"url": "https://tug.org/svn/texlive/trunk/Build/source/texk/ttfdump/ChangeLog?revision=69605\u0026view=co"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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.