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-535Q-QGJC-RQ5R
Vulnerability from github – Published: 2025-10-16 21:31 – Updated: 2025-10-17 15:31An out-of-bounds write in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access. Given it's a heap overflow in a privileged hypervisor context, exploitation may enable arbitrary code execution or guest-to-host privilege escalation.
{
"affected": [],
"aliases": [
"CVE-2025-61553"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-16T19:15:33Z",
"severity": "HIGH"
},
"details": "An out-of-bounds write in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access. Given it\u0027s a heap overflow in a privileged hypervisor context, exploitation may enable arbitrary code execution or guest-to-host privilege escalation.",
"id": "GHSA-535q-qgjc-rq5r",
"modified": "2025-10-17T15:31:02Z",
"published": "2025-10-16T21:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61553"
},
{
"type": "WEB",
"url": "https://github.com/retrage/advisories/blob/main/CVE-2025-61553/README.md"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/bitvisor/code/ci/48090711ade5910b601d2b0034859a6a890cc82d"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5377-M765-56MV
Vulnerability from github – Published: 2026-03-16 15:30 – Updated: 2026-06-30 03:35GStreamer JPEG Parser Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the processing of Huffman tables. 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-28840.
{
"affected": [],
"aliases": [
"CVE-2026-3082"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-16T14:19:46Z",
"severity": "HIGH"
},
"details": "GStreamer JPEG Parser Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.\n\nThe specific flaw exists within the processing of Huffman tables. 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-28840.",
"id": "GHSA-5377-m765-56mv",
"modified": "2026-06-30T03:35:54Z",
"published": "2026-03-16T15:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3082"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-163"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3082.json"
},
{
"type": "WEB",
"url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/7d3c258ed928cf59d126c8ea926b185f046f444c"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447492"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-3082"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:9488"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:9487"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:9447"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:9446"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8876"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8874"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8862"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8857"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8854"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7673"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:6750"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:6300"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:6259"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19180"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19024"
}
],
"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-53C9-M2H7-5XHR
Vulnerability from github – Published: 2024-09-24 00:31 – Updated: 2024-09-25 03:30Heap buffer overflow in PDF in Google Chrome prior to 124.0.6367.78 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2024-7018"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-23T22:15:03Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in PDF in Google Chrome prior to 124.0.6367.78 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: Medium)",
"id": "GHSA-53c9-m2h7-5xhr",
"modified": "2024-09-25T03:30:35Z",
"published": "2024-09-24T00:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7018"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/333414305"
}
],
"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-53J3-7GCW-5JMC
Vulnerability from github – Published: 2024-04-09 18:30 – Updated: 2024-04-09 18:30Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-26179"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-09T17:15:36Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-53j3-7gcw-5jmc",
"modified": "2024-04-09T18:30:24Z",
"published": "2024-04-09T18:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26179"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26179"
}
],
"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-53Q2-MQCG-JHM2
Vulnerability from github – Published: 2026-06-09 21:32 – Updated: 2026-06-09 21:32Format Plugins versions 1.1.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2026-48292"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T21:17:25Z",
"severity": "HIGH"
},
"details": "Format Plugins versions 1.1.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-53q2-mqcg-jhm2",
"modified": "2026-06-09T21:32:39Z",
"published": "2026-06-09T21:32:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48292"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/formatplugins/apsb26-65.html"
}
],
"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-53X2-4242-7XPF
Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30Ashlar-Vellum Cobalt Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 CO 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-19928.
{
"affected": [],
"aliases": [
"CVE-2023-35709"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T02:15:32Z",
"severity": "HIGH"
},
"details": "Ashlar-Vellum Cobalt Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 CO 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-19928.",
"id": "GHSA-53x2-4242-7xpf",
"modified": "2024-05-03T03:30:52Z",
"published": "2024-05-03T03:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35709"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-872"
}
],
"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-5444-F65M-F3C8
Vulnerability from github – Published: 2026-05-26 21:31 – Updated: 2026-05-26 21:31FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/dynamic_binary_buffer.hpp). Five methods (append_dynamic_buffer, append_data_as_pointer, append_data_as_object_ptr, memcpy_from_ptr, memcpy_from_object_ptr) use an incorrect bounds check of the form 'if (offset + length > maximum_internal_storage_size + 1)' instead of the correct 'if (offset + length > maximum_internal_storage_size)'. This allows writing exactly one byte past the end of the heap-allocated buffer. The class is used pervasively in BGP message encoding/decoding, NetFlow template processing, and Flow Spec NLRI construction. An attacker who can send network traffic (NetFlow, sFlow, IPFIX, or BGP) to a FastNetMon instance can trigger this overflow, potentially achieving arbitrary code execution by corrupting heap metadata. Notably, the append_byte() method uses the correct bounds check, confirming the inconsistency.
{
"affected": [],
"aliases": [
"CVE-2026-48689"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-26T19:16:28Z",
"severity": "CRITICAL"
},
"details": "FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/dynamic_binary_buffer.hpp). Five methods (append_dynamic_buffer, append_data_as_pointer, append_data_as_object_ptr, memcpy_from_ptr, memcpy_from_object_ptr) use an incorrect bounds check of the form \u0027if (offset + length \u003e maximum_internal_storage_size + 1)\u0027 instead of the correct \u0027if (offset + length \u003e maximum_internal_storage_size)\u0027. This allows writing exactly one byte past the end of the heap-allocated buffer. The class is used pervasively in BGP message encoding/decoding, NetFlow template processing, and Flow Spec NLRI construction. An attacker who can send network traffic (NetFlow, sFlow, IPFIX, or BGP) to a FastNetMon instance can trigger this overflow, potentially achieving arbitrary code execution by corrupting heap metadata. Notably, the append_byte() method uses the correct bounds check, confirming the inconsistency.",
"id": "GHSA-5444-f65m-f3c8",
"modified": "2026-05-26T21:31:58Z",
"published": "2026-05-26T21:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48689"
},
{
"type": "WEB",
"url": "https://github.com/pavel-odintsov/fastnetmon"
},
{
"type": "WEB",
"url": "https://github.com/pavel-odintsov/fastnetmon/blob/master/src/dynamic_binary_buffer.hpp"
},
{
"type": "WEB",
"url": "https://lorikeetsecurity.com/blog/fastnetmon-cve-2026-48689-dynamic-buffer-off-by-one"
}
],
"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-5469-CFX5-X4HJ
Vulnerability from github – Published: 2025-08-12 21:31 – Updated: 2025-08-12 21:31InCopy versions 20.4, 19.5.4 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-54217"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T21:15:41Z",
"severity": "HIGH"
},
"details": "InCopy versions 20.4, 19.5.4 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-5469-cfx5-x4hj",
"modified": "2025-08-12T21:31:22Z",
"published": "2025-08-12T21:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54217"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/incopy/apsb25-80.html"
}
],
"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-54G3-MJPM-FVF4
Vulnerability from github – Published: 2025-01-14 18:32 – Updated: 2025-01-14 18:32Windows Telephony Service Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2025-21248"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:15:42Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-54g3-mjpm-fvf4",
"modified": "2025-01-14T18:32:03Z",
"published": "2025-01-14T18:32:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21248"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21248"
}
],
"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-54GX-26JF-FJG6
Vulnerability from github – Published: 2023-07-11 12:30 – Updated: 2024-04-04 05:55A vulnerability has been identified in Tecnomatix Plant Simulation V2201 (All versions < V2201.0008), Tecnomatix Plant Simulation V2302 (All versions < V2302.0002). The affected application is vulnerable to heap-based buffer overflow while parsing specially crafted PRT files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-21109)
{
"affected": [],
"aliases": [
"CVE-2023-37246"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-11T10:15:11Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in Tecnomatix Plant Simulation V2201 (All versions \u003c V2201.0008), Tecnomatix Plant Simulation V2302 (All versions \u003c V2302.0002). The affected application is vulnerable to heap-based buffer overflow while parsing specially crafted PRT files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-21109)",
"id": "GHSA-54gx-26jf-fjg6",
"modified": "2024-04-04T05:55:51Z",
"published": "2023-07-11T12:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37246"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-764801.pdf"
}
],
"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"
}
]
}
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.