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().
4578 vulnerabilities reference this CWE, most recent first.
GHSA-RJ8H-6RC9-G7QX
Vulnerability from github – Published: 2025-01-25 00:33 – Updated: 2025-02-05 15:32SunGrow WiNet-SV200.001.00.P027 and earlier versions is vulnerable to heap-based buffer overflow due to bounds checks of the MQTT message content.
{
"affected": [],
"aliases": [
"CVE-2024-50698"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-24T23:15:09Z",
"severity": "CRITICAL"
},
"details": "SunGrow WiNet-SV200.001.00.P027 and earlier versions is vulnerable to heap-based buffer overflow due to bounds checks of the MQTT message content.",
"id": "GHSA-rj8h-6rc9-g7qx",
"modified": "2025-02-05T15:32:21Z",
"published": "2025-01-25T00:33:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50698"
},
{
"type": "WEB",
"url": "https://en.sungrowpower.com/security-notice-detail-2/5961"
}
],
"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-RJHQ-9PF8-CRX3
Vulnerability from github – Published: 2025-08-19 00:30 – Updated: 2025-08-19 00:30In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of user-supplied data when parsing XE files. This could lead to a heap-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
{
"affected": [],
"aliases": [
"CVE-2025-52584"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-18T22:15:27Z",
"severity": "HIGH"
},
"details": "In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of user-supplied data when parsing XE files. This could lead to a heap-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.",
"id": "GHSA-rjhq-9pf8-crx3",
"modified": "2025-08-19T00:30:33Z",
"published": "2025-08-19T00:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52584"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-224-01"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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-RJM8-2C58-4CF4
Vulnerability from github – Published: 2022-05-24 19:01 – Updated: 2022-05-24 19:01This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. 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 handling of the Decimal element. A crafted leadDigits value in a Decimal element can trigger an overflow of a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current process. Was ZDI-CAN-13095.
{
"affected": [],
"aliases": [
"CVE-2021-31454"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-07T21:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. 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 handling of the Decimal element. A crafted leadDigits value in a Decimal element can trigger an overflow of a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current process. Was ZDI-CAN-13095.",
"id": "GHSA-rjm8-2c58-4cf4",
"modified": "2022-05-24T19:01:43Z",
"published": "2022-05-24T19:01:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31454"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-543"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-RJM8-HJQ2-73J6
Vulnerability from github – Published: 2022-03-16 00:00 – Updated: 2025-06-25 21:30Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy(op, ip, copy_end), don’t exceed the destination buffer’s limits. This issue is very similar to CVE-2021-43304, but the vulnerable copy operation is in a different wildCopy call.
{
"affected": [],
"aliases": [
"CVE-2021-43305"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-14T23:15:00Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in Clickhouse\u0027s LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy\u003ccopy_amount\u003e(op, ip, copy_end), don\u2019t exceed the destination buffer\u2019s limits. This issue is very similar to CVE-2021-43304, but the vulnerable copy operation is in a different wildCopy call.",
"id": "GHSA-rjm8-hjq2-73j6",
"modified": "2025-06-25T21:30:30Z",
"published": "2022-03-16T00:00:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43305"
},
{
"type": "WEB",
"url": "https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RM26-GPM4-M74X
Vulnerability from github – Published: 2023-07-13 12:30 – Updated: 2024-04-04 06:07Experion server may experience a DoS due to a heap overflow which could occur when handling a specially crafted message
{
"affected": [],
"aliases": [
"CVE-2023-24474"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-13T11:15:08Z",
"severity": "HIGH"
},
"details": "Experion server may experience a DoS due to a heap overflow which could occur when handling a specially crafted message",
"id": "GHSA-rm26-gpm4-m74x",
"modified": "2024-04-04T06:07:01Z",
"published": "2023-07-13T12:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-24474"
},
{
"type": "WEB",
"url": "https://process.honeywell.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-RM65-3JJ4-3VCM
Vulnerability from github – Published: 2026-08-28 03:31 – Updated: 2026-08-28 03:31A heap-based buffer overflow vulnerability exists in openNDS before 11.0.0 that allows an unauthenticated attacker on the captive portal network to crash the openNDS daemon (denial of service) and potentially achieve remote code execution. This is in http_microhttpd.c.
{
"affected": [],
"aliases": [
"CVE-2026-38821"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-28T02:16:21Z",
"severity": "HIGH"
},
"details": "A heap-based buffer overflow vulnerability exists in openNDS before 11.0.0 that allows an unauthenticated attacker on the captive portal network to crash the openNDS daemon (denial of service) and potentially achieve remote code execution. This is in http_microhttpd.c.",
"id": "GHSA-rm65-3jj4-3vcm",
"modified": "2026-08-28T03:31:23Z",
"published": "2026-08-28T03:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38821"
},
{
"type": "WEB",
"url": "https://github.com/openNDS/openNDS/commit/3b5f7ef40cd048826d3c4a16f61a73a1768fd5a9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-RM77-W39M-FPFM
Vulnerability from github – Published: 2024-09-10 18:30 – Updated: 2024-09-10 18:30Windows TCP/IP Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-21416"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-10T17:15:15Z",
"severity": "HIGH"
},
"details": "Windows TCP/IP Remote Code Execution Vulnerability",
"id": "GHSA-rm77-w39m-fpfm",
"modified": "2024-09-10T18:30:44Z",
"published": "2024-09-10T18:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21416"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21416"
}
],
"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"
}
]
}
GHSA-RMF3-9HMX-HC46
Vulnerability from github – Published: 2026-08-14 18:31 – Updated: 2026-08-14 18:31Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-72970"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-14T18:19:09Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-rmf3-9hmx-hc46",
"modified": "2026-08-14T18:31:40Z",
"published": "2026-08-14T18:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72970"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72970"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-RMF4-5HQ8-6C8C
Vulnerability from github – Published: 2025-08-12 21:31 – Updated: 2025-08-12 21:31InDesign Desktop 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-2025-54212"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T21:15:40Z",
"severity": "HIGH"
},
"details": "InDesign Desktop 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-rmf4-5hq8-6c8c",
"modified": "2025-08-12T21:31:22Z",
"published": "2025-08-12T21:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54212"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/indesign/apsb25-79.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-RMFG-JHVQ-W5R5
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-49175"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T17:16:52Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-rmfg-jhvq-w5r5",
"modified": "2026-07-14T18:32:00Z",
"published": "2026-07-14T18:32:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49175"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49175"
}
],
"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"
}
]
}
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.