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().
4129 vulnerabilities reference this CWE, most recent first.
GHSA-GX27-VFJC-C4HF
Vulnerability from github – Published: 2025-08-06 03:30 – Updated: 2025-08-06 03:30:Vulnerability of insufficient data length verification in the DFA module. Impact: Successful exploitation of this vulnerability may affect availability.
{
"affected": [],
"aliases": [
"CVE-2025-54630"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-06T03:15:26Z",
"severity": "MODERATE"
},
"details": ":Vulnerability of insufficient data length verification in the DFA module.\nImpact: Successful exploitation of this vulnerability may affect availability.",
"id": "GHSA-gx27-vfjc-c4hf",
"modified": "2025-08-06T03:30:27Z",
"published": "2025-08-06T03:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54630"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletin/2025/8"
}
],
"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-GXMR-RXPV-C8FQ
Vulnerability from github – Published: 2024-02-01 21:30 – Updated: 2025-11-04 18:30Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX image parsing library version 3.2.1 and prior is susceptible to a heap-based buffer overflow vulnerability.
{
"affected": [],
"aliases": [
"CVE-2023-5841"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-01T19:15:08Z",
"severity": "CRITICAL"
},
"details": "Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX\u00a0image parsing library version 3.2.1 and prior is susceptible to a heap-based buffer overflow vulnerability.",
"id": "GHSA-gxmr-rxpv-c8fq",
"modified": "2025-11-04T18:30:45Z",
"published": "2024-02-01T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5841"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LSB6DB5LAKGPLRXEF5HDNGUMT7GIFT2C"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWMINVKQLSUHECXBSQMZFCSDRIHFOJJI"
},
{
"type": "WEB",
"url": "https://takeonme.org/cves/CVE-2023-5841.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/32"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/34"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/36"
}
],
"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:N",
"type": "CVSS_V3"
}
]
}
GHSA-H25F-PR63-6QX2
Vulnerability from github – Published: 2025-07-17 21:32 – Updated: 2025-07-17 21:32A buffer overflow vulnerability was reported in the Lenovo Protection Driver, prior to version 5.1.1110.4231, used in Lenovo PC Manager, Lenovo Browser, and Lenovo App Store could allow a local attacker with elevated privileges to execute arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2025-4657"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-17T20:15:30Z",
"severity": "HIGH"
},
"details": "A buffer overflow vulnerability was reported in the Lenovo Protection Driver, prior to version 5.1.1110.4231, used in Lenovo PC Manager, Lenovo Browser, and Lenovo App Store could allow a local attacker with elevated privileges to execute arbitrary code.",
"id": "GHSA-h25f-pr63-6qx2",
"modified": "2025-07-17T21:32:16Z",
"published": "2025-07-17T21:32:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4657"
},
{
"type": "WEB",
"url": "https://iknow.lenovo.com.cn/detail/430155"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/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-H2C9-6VFM-CC58
Vulnerability from github – Published: 2022-10-15 12:01 – Updated: 2022-10-15 12:01Adobe ColdFusion versions Update 14 (and earlier) and Update 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 does not require user interaction, the vulnerability is triggered when a crafted network packet is sent to the server.
{
"affected": [],
"aliases": [
"CVE-2022-35711"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-14T20:15:00Z",
"severity": "CRITICAL"
},
"details": "Adobe ColdFusion versions Update 14 (and earlier) and Update 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 does not require user interaction, the vulnerability is triggered when a crafted network packet is sent to the server.",
"id": "GHSA-h2c9-6vfm-cc58",
"modified": "2022-10-15T12:01:01Z",
"published": "2022-10-15T12:01:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35711"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb22-44.html"
}
],
"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-H2F3-RMWP-XJM6
Vulnerability from github – Published: 2024-08-13 18:31 – Updated: 2024-08-13 18:31Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-38120"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-13T18:15:13Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-h2f3-rmwp-xjm6",
"modified": "2024-08-13T18:31:16Z",
"published": "2024-08-13T18:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38120"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38120"
}
],
"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-H2GH-88JM-27FG
Vulnerability from github – Published: 2022-06-17 00:01 – Updated: 2022-06-17 00:01Adobe InDesign versions 17.2.1 (and earlier) and 16.4.1 (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-2022-30661"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-16T17:15:00Z",
"severity": "HIGH"
},
"details": "Adobe InDesign versions 17.2.1 (and earlier) and 16.4.1 (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-h2gh-88jm-27fg",
"modified": "2022-06-17T00:01:25Z",
"published": "2022-06-17T00:01:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-30661"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/indesign/apsb22-30.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-H2H8-MQ64-8JCM
Vulnerability from github – Published: 2025-09-02 21:30 – Updated: 2025-09-02 21:30Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. 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 escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26553.
{
"affected": [],
"aliases": [
"CVE-2025-8302"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-02T20:15:39Z",
"severity": "HIGH"
},
"details": "Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. 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 escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26553.",
"id": "GHSA-h2h8-mq64-8jcm",
"modified": "2025-09-02T21:30:58Z",
"published": "2025-09-02T21:30:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8302"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-879"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-H2PV-QMV8-HVCV
Vulnerability from github – Published: 2026-06-25 18:30 – Updated: 2026-06-25 21:31List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function.
pairwise() collects the values returned by the block into a heap buffer sized to the longer input array, then grows the buffer before each copy with a single quadrupling (alloc <<= 2) instead of a loop. A block call that returns more than four times the current allocation in one invocation outgrows that one quadrupling, and the copy writes past the end of the buffer.
Any caller of pairwise() whose block returns, for a single pair, more than four times the longer input array's length writes past the buffer and corrupts the heap.
{
"affected": [],
"aliases": [
"CVE-2026-12844"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-25T16:16:33Z",
"severity": "HIGH"
},
"details": "List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function.\n\npairwise() collects the values returned by the block into a heap buffer sized to the longer input array, then grows the buffer before each copy with a single quadrupling (alloc \u003c\u003c= 2) instead of a loop. A block call that returns more than four times the current allocation in one invocation outgrows that one quadrupling, and the copy writes past the end of the buffer.\n\nAny caller of pairwise() whose block returns, for a single pair, more than four times the longer input array\u0027s length writes past the buffer and corrupts the heap.",
"id": "GHSA-h2pv-qmv8-hvcv",
"modified": "2026-06-25T21:31:29Z",
"published": "2026-06-25T18:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12844"
},
{
"type": "WEB",
"url": "https://github.com/houseabsolute/List-SomeUtils-XS/commit/22549f78669b780d6aa338a2d2e49a3dedfffaa6.patch"
},
{
"type": "WEB",
"url": "https://metacpan.org/release/DROLSKY/List-SomeUtils-XS-0.59/changes"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/06/25/11"
}
],
"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-H2Q2-G4V6-V8FH
Vulnerability from github – Published: 2026-06-09 18:30 – Updated: 2026-06-09 18:30Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2026-40404"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T17:17:06Z",
"severity": "HIGH"
},
"details": "Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability",
"id": "GHSA-h2q2-g4v6-v8fh",
"modified": "2026-06-09T18:30:42Z",
"published": "2026-06-09T18:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40404"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40404"
}
],
"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-H372-RXQ3-5Q6P
Vulnerability from github – Published: 2026-02-02 09:30 – Updated: 2026-02-02 15:30In wlan, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461651; Issue ID: MSV-4758.
{
"affected": [],
"aliases": [
"CVE-2026-20408"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-02T09:15:55Z",
"severity": "HIGH"
},
"details": "In wlan, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461651; Issue ID: MSV-4758.",
"id": "GHSA-h372-rxq3-5q6p",
"modified": "2026-02-02T15:30:33Z",
"published": "2026-02-02T09:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20408"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/February-2026"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/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.