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-W342-H5P8-HW97
Vulnerability from github – Published: 2024-05-14 15:32 – Updated: 2024-07-03 18:40HDF5 through 1.14.3 contains a heap buffer overflow in H5T__bit_find, resulting in the corruption of the instruction pointer and causing denial of service or potential code execution.
{
"affected": [],
"aliases": [
"CVE-2024-29163"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T15:15:32Z",
"severity": "HIGH"
},
"details": "HDF5 through 1.14.3 contains a heap buffer overflow in H5T__bit_find, resulting in the corruption of the instruction pointer and causing denial of service or potential code execution.",
"id": "GHSA-w342-h5p8-hw97",
"modified": "2024-07-03T18:40:26Z",
"published": "2024-05-14T15:32:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-29163"
},
{
"type": "WEB",
"url": "https://www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4"
}
],
"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-W3CF-25F4-VH5M
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-07-08 18:31Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-48824"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T17:15:47Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-w3cf-25f4-vh5m",
"modified": "2025-07-08T18:31:46Z",
"published": "2025-07-08T18:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48824"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48824"
}
],
"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-W3H4-X33C-8CC8
Vulnerability from github – Published: 2025-04-08 18:34 – Updated: 2025-04-08 18:34Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-26668"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T18:15:50Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-w3h4-x33c-8cc8",
"modified": "2025-04-08T18:34:47Z",
"published": "2025-04-08T18:34:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-26668"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26668"
}
],
"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-W3QQ-H832-55JF
Vulnerability from github – Published: 2023-12-09 03:30 – Updated: 2023-12-09 03:30IBM Informix Dynamic Server 12.10 and 14.10 archecker is vulnerable to a heap buffer overflow, caused by improper bounds checking which could allow a local user to cause a segmentation fault. IBM X-Force ID: 251204.
{
"affected": [],
"aliases": [
"CVE-2023-28526"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-12-09T03:15:07Z",
"severity": "MODERATE"
},
"details": "\nIBM Informix Dynamic Server 12.10 and 14.10 archecker is vulnerable to a heap buffer overflow, caused by improper bounds checking which could allow a local user to cause a segmentation fault. IBM X-Force ID: 251204.\n\n",
"id": "GHSA-w3qq-h832-55jf",
"modified": "2023-12-09T03:30:16Z",
"published": "2023-12-09T03:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28526"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/251204"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7070188"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-W457-V52W-2VRW
Vulnerability from github – Published: 2024-02-13 18:38 – Updated: 2024-02-13 18:38Microsoft ActiveX Data Objects Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-21349"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-13T18:15:50Z",
"severity": "HIGH"
},
"details": "Microsoft ActiveX Data Objects Remote Code Execution Vulnerability",
"id": "GHSA-w457-v52w-2vrw",
"modified": "2024-02-13T18:38:23Z",
"published": "2024-02-13T18:38:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21349"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21349"
}
],
"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-W458-QG9W-X8VM
Vulnerability from github – Published: 2022-05-24 19:04 – Updated: 2024-07-03 18:32Windows Common Log File System Driver Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2021-31954"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-08T23:15:00Z",
"severity": "HIGH"
},
"details": "Windows Common Log File System Driver Elevation of Privilege Vulnerability",
"id": "GHSA-w458-qg9w-x8vm",
"modified": "2024-07-03T18:32:28Z",
"published": "2022-05-24T19:04:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31954"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31954"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-668"
}
],
"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-W4CP-3F3M-XJX3
Vulnerability from github – Published: 2025-01-14 18:32 – Updated: 2025-01-14 18:32Windows Telephony Service Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2025-21236"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T18:15:36Z",
"severity": "HIGH"
},
"details": "Windows Telephony Service Remote Code Execution Vulnerability",
"id": "GHSA-w4cp-3f3m-xjx3",
"modified": "2025-01-14T18:32:02Z",
"published": "2025-01-14T18:32:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21236"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21236"
}
],
"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-W4JQ-2VXF-PPGG
Vulnerability from github – Published: 2025-06-10 18:32 – Updated: 2025-06-10 18:32InDesign Desktop versions ID20.2, ID19.5.3 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-2025-30317"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-10T17:21:19Z",
"severity": "HIGH"
},
"details": "InDesign Desktop versions ID20.2, ID19.5.3 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-w4jq-2vxf-ppgg",
"modified": "2025-06-10T18:32:28Z",
"published": "2025-06-10T18:32:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30317"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/indesign/apsb25-53.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-W4Q3-279C-XVRV
Vulnerability from github – Published: 2026-08-26 21:31 – Updated: 2026-08-26 21:31A heap-based buffer overflow vulnerability exists in the Dia diagram editor WPG file format importer.
In plug-ins/wpg/wpg-import.c, the WPG import renderer allocates a fixed palette with:
ren->pPal = g_new0(WPGColorRGB, 256);
When handling a WPG_COLORMAP record, the parser reads a start index (i16) and number of colors (iNum16) from the file and reads palette data with:
bRet &= (iNum16 == (int)fread(&ren->pPal[i16], sizeof(WPGColorRGB), iNum16, f));
The only bounds-related check is if (i16 >= 0 && i16 <= iSize), where iSize is the WPG record size—not the palette capacity. There is no validation that i16 is less than 256 or that i16 + iNum16 does not exceed 256.
A malicious WPG file can supply i16=256 and iNum16=264. That causes fread() to write 792 bytes starting at &pPal[256], while the palette buffer is only 768 bytes (256 entries × 3 bytes). This overflows into adjacent heap metadata and can crash Dia (SIGABRT / malloc corruption errors) or, depending on heap layout and exploit primitives, potentially lead to arbitrary code execution.
Exploitation requires convincing a user to open a crafted WPG file via Dia's file dialog, command line, or file association. No special privileges are required to deliver the file to the victim.
Affected component: WPG parser (plug-ins/wpg/wpg-import.c). Affected versions: all Dia versions containing this code path (reporter tested Dia 0.98+git20260221-1; issue present on upstream master as of 2026-08-21).
{
"affected": [],
"aliases": [
"CVE-2026-77652"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-26T20:18:02Z",
"severity": "HIGH"
},
"details": "A heap-based buffer overflow vulnerability exists in the Dia diagram editor WPG file format importer.\n\nIn plug-ins/wpg/wpg-import.c, the WPG import renderer allocates a fixed palette with:\n\n ren-\u003epPal = g_new0(WPGColorRGB, 256);\n\nWhen handling a WPG_COLORMAP record, the parser reads a start index (i16) and number of colors (iNum16) from the file and reads palette data with:\n\n bRet \u0026= (iNum16 == (int)fread(\u0026ren-\u003epPal[i16], sizeof(WPGColorRGB), iNum16, f));\n\nThe only bounds-related check is `if (i16 \u003e= 0 \u0026\u0026 i16 \u003c= iSize)`, where iSize is the WPG record size\u2014not the palette capacity. There is no validation that i16 is less than 256 or that i16 + iNum16 does not exceed 256.\n\nA malicious WPG file can supply i16=256 and iNum16=264. That causes fread() to write 792 bytes starting at \u0026pPal[256], while the palette buffer is only 768 bytes (256 entries \u00d7 3 bytes). This overflows into adjacent heap metadata and can crash Dia (SIGABRT / malloc corruption errors) or, depending on heap layout and exploit primitives, potentially lead to arbitrary code execution.\n\nExploitation requires convincing a user to open a crafted WPG file via Dia\u0027s file dialog, command line, or file association. No special privileges are required to deliver the file to the victim.\n\nAffected component: WPG parser (plug-ins/wpg/wpg-import.c).\nAffected versions: all Dia versions containing this code path (reporter tested Dia 0.98+git20260221-1; issue present on upstream master as of 2026-08-21).",
"id": "GHSA-w4q3-279c-xvrv",
"modified": "2026-08-26T21:31:45Z",
"published": "2026-08-26T21:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77652"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-77652"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520884"
},
{
"type": "WEB",
"url": "https://gitlab.gnome.org/GNOME/dia/-/blob/master/plug-ins/wpg/wpg-import.c"
},
{
"type": "WEB",
"url": "https://gitlab.gnome.org/GNOME/dia/-/issues/580"
}
],
"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-W52X-CP47-XHHW
Vulnerability from github – Published: 2023-02-15 15:30 – Updated: 2023-02-23 06:30A vulnerability, which was classified as critical, has been found in GPAC 2.3-DEV-rev40-g3602a5ded. This issue affects the function mp3_dmx_process of the file filters/reframe_mp3.c. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-221087.
{
"affected": [],
"aliases": [
"CVE-2023-0841"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-15T14:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability, which was classified as critical, has been found in GPAC 2.3-DEV-rev40-g3602a5ded. This issue affects the function mp3_dmx_process of the file filters/reframe_mp3.c. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-221087.",
"id": "GHSA-w52x-cp47-xhhw",
"modified": "2023-02-23T06:30:18Z",
"published": "2023-02-15T15:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0841"
},
{
"type": "WEB",
"url": "https://github.com/qianshuidewajueji/poc/blob/main/gpac/mp3_dmx_process_poc3"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.221087"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.221087"
}
],
"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.