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().
5427 vulnerabilities reference this CWE, most recent first.
GHSA-JXWC-XXJW-356X
Vulnerability from github – Published: 2026-04-02 21:32 – Updated: 2026-04-04 00:31Hirschmann Industrial IT products contain a heap overflow vulnerability in the HiLCOS web interface that allows unauthenticated remote attackers to trigger a denial-of-service condition by sending specially crafted requests to the web interface. Attackers can exploit this heap overflow to crash the affected device and cause service disruption, particularly in configurations where the Public Spot functionality is enabled.
{
"affected": [],
"aliases": [
"CVE-2024-14033"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-02T21:16:39Z",
"severity": "HIGH"
},
"details": "Hirschmann Industrial IT products contain a heap overflow vulnerability in the HiLCOS web interface that allows unauthenticated remote attackers to trigger a denial-of-service condition by sending specially crafted requests to the web interface. Attackers can exploit this heap overflow to crash the affected device and cause service disruption, particularly in configurations where the Public Spot functionality is enabled.",
"id": "GHSA-jxwc-xxjw-356x",
"modified": "2026-04-04T00:31:25Z",
"published": "2026-04-02T21:32:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-14033"
},
{
"type": "WEB",
"url": "https://assets.belden.com/m/774d24c02be5c220/original/Belden_Security_Bulletin_BSECV-2024-16.pdf"
},
{
"type": "WEB",
"url": "https://ssd-disclosure.com/ssd-advisory-lancom-lcos-heap-overflow"
},
{
"type": "WEB",
"url": "https://www.belden.com/security"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/hirschmann-industrial-it-hilcos-heap-overflow-dos"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-M2CW-C66M-J23G
Vulnerability from github – Published: 2026-08-06 15:32 – Updated: 2026-08-07 00:31Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client
This issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3.
{
"affected": [],
"aliases": [
"CVE-2026-34502"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-06T15:16:54Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client\n\nThis issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3.",
"id": "GHSA-m2cw-c66m-j23g",
"modified": "2026-08-07T00:31:11Z",
"published": "2026-08-06T15:32:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34502"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/spk5643m4vq0mb8h5b9hz9gkp57ombl8"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/08/06/12"
}
],
"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-M2FP-C5WR-XJPH
Vulnerability from github – Published: 2023-07-25 09:30 – Updated: 2024-11-08 09:30Ariel Harush and Roy Hodir from OTORIO have found a flaw in the AXIS A1001 when communicating over OSDP. A heap-based buffer overflow was found in the pacsiod process which is handling the OSDP communication allowing to write outside of the allocated buffer. By appending invalid data to an OSDP message it was possible to write data beyond the heap allocated buffer. The data written outside the buffer could be used to execute arbitrary code.
lease refer to the Axis security advisory for more information, mitigation and affected products and software versions.
{
"affected": [],
"aliases": [
"CVE-2023-21406"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-25T08:15:10Z",
"severity": "HIGH"
},
"details": "\nAriel Harush and Roy Hodir from OTORIO have found a flaw in the AXIS A1001 when\ncommunicating over OSDP. A heap-based buffer overflow was found in the pacsiod process which\nis handling the OSDP communication allowing to write outside of the allocated buffer. By\nappending invalid data to an OSDP message it was possible to write data beyond the heap\nallocated buffer. The data written outside the buffer could be used to execute arbitrary code.\u00a0\n\nlease refer to the Axis security advisory for more information, mitigation and affected products and software versions.\n\n",
"id": "GHSA-m2fp-c5wr-xjph",
"modified": "2024-11-08T09:30:29Z",
"published": "2023-07-25T09:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21406"
},
{
"type": "WEB",
"url": "https://www.axis.com/dam/public/1b/21/5f/cve-2023-21406-en-US-407245.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-M2HM-7HWW-7MR3
Vulnerability from github – Published: 2024-11-22 21:32 – Updated: 2024-11-22 21:32IrfanView SVG File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 SVG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22185.
{
"affected": [],
"aliases": [
"CVE-2024-11509"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T21:15:09Z",
"severity": "HIGH"
},
"details": "IrfanView SVG File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 SVG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22185.",
"id": "GHSA-m2hm-7hww-7mr3",
"modified": "2024-11-22T21:32:17Z",
"published": "2024-11-22T21:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-11509"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1602"
}
],
"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-M2QF-MC96-PJ4P
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32Integer overflow or wraparound in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-69738"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:45Z",
"severity": "HIGH"
},
"details": "Integer overflow or wraparound in Windows Biometric Service allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-m2qf-mc96-pj4p",
"modified": "2026-09-08T18:32:56Z",
"published": "2026-09-08T18:32:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69738"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69738"
}
],
"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-M2V2-W4F9-RMQ6
Vulnerability from github – Published: 2022-05-13 01:38 – Updated: 2022-05-13 01:38A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.
{
"affected": [],
"aliases": [
"CVE-2016-2123"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-11-01T13:29:00Z",
"severity": "HIGH"
},
"details": "A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.",
"id": "GHSA-m2v2-w4f9-rmq6",
"modified": "2022-05-13T01:38:49Z",
"published": "2022-05-13T01:38:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-2123"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123"
},
{
"type": "WEB",
"url": "https://www.samba.org/samba/security/CVE-2016-2123.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/94970"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1037493"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-M2VH-Q87Q-6R5Q
Vulnerability from github – Published: 2026-06-11 00:32 – Updated: 2026-06-30 03:37GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. 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 HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28618.
{
"affected": [],
"aliases": [
"CVE-2026-2049"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-10T22:16:56Z",
"severity": "HIGH"
},
"details": "GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. 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 HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28618.",
"id": "GHSA-m2vh-q87q-6r5q",
"modified": "2026-06-30T03:37:00Z",
"published": "2026-06-11T00:32:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2049"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-2049"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487738"
},
{
"type": "WEB",
"url": "https://gitlab.gnome.org/GNOME/gegl/-/issues/450"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2049.json"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-214"
}
],
"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-M2XP-4MM9-WGH7
Vulnerability from github – Published: 2024-07-09 18:30 – Updated: 2024-07-09 18:30Secure Boot Security Feature Bypass Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-38065"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T17:15:38Z",
"severity": "MODERATE"
},
"details": "Secure Boot Security Feature Bypass Vulnerability",
"id": "GHSA-m2xp-4mm9-wgh7",
"modified": "2024-07-09T18:30:52Z",
"published": "2024-07-09T18:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38065"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38065"
}
],
"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-M335-2QH4-R66X
Vulnerability from github – Published: 2026-08-06 15:32 – Updated: 2026-08-07 00:31Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility redis client.
This issue affects Apache Portable Runtime Utility: from 1.6.0 through 1.6.3.
Users are recommended to upgrade to version 1.6.4, which fixes the issue.
{
"affected": [],
"aliases": [
"CVE-2026-34501"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-06T15:16:54Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility redis client.\n\nThis issue affects Apache Portable Runtime Utility: from 1.6.0 through 1.6.3.\n\nUsers are recommended to upgrade to version 1.6.4, which fixes the issue.",
"id": "GHSA-m335-2qh4-r66x",
"modified": "2026-08-07T00:31:11Z",
"published": "2026-08-06T15:32:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34501"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/o8h6c7cq86fplxlnry6c3rn9x0ovq8mv"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/08/06/11"
}
],
"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-M352-QW3H-J69P
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-69764"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:47Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-m352-qw3h-j69p",
"modified": "2026-09-08T18:32:57Z",
"published": "2026-09-08T18:32:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69764"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69764"
}
],
"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
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.