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-H655-847G-Q4F7
Vulnerability from github – Published: 2026-07-08 09:31 – Updated: 2026-07-08 09:31Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.
{
"affected": [],
"aliases": [
"CVE-2026-55999"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-08T09:16:29Z",
"severity": "HIGH"
},
"details": "Local attackers with a X connection able to provide PCX fonts to the X \nserver xorg-server before 21.2.24 and xwayland before 24.1.13 could \ncause a heap buffer overflow via SetFont due to missing glyph boundary checks.",
"id": "GHSA-h655-847g-q4f7",
"modified": "2026-07-08T09:31:49Z",
"published": "2026-07-08T09:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55999"
},
{
"type": "WEB",
"url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/fbf7bac22e2c6bd627fb042742a23318263edae1"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2026/07/08/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-H6FX-M56R-MVW2
Vulnerability from github – Published: 2024-12-12 03:33 – Updated: 2024-12-12 03:33Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-49104"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-12T02:04:36Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-h6fx-m56r-mvw2",
"modified": "2024-12-12T03:33:05Z",
"published": "2024-12-12T03:33:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49104"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49104"
}
],
"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-H6J5-P62Q-4G5Q
Vulnerability from github – Published: 2025-07-09 00:30 – Updated: 2025-07-09 00:30InDesign Desktop versions 19.5.3 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-2025-47103"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T22:15:25Z",
"severity": "HIGH"
},
"details": "InDesign Desktop versions 19.5.3 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-h6j5-p62q-4g5q",
"modified": "2025-07-09T00:30:31Z",
"published": "2025-07-09T00:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47103"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/indesign/apsb25-60.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-H6W8-G5HJ-F5PR
Vulnerability from github – Published: 2022-05-17 05:07 – Updated: 2024-07-03 18:31** DISPUTED ** plugins/demux/libmkv_plugin.dll in VideoLAN VLC Media Player 2.0.7, and possibly other versions, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted MKV file, possibly involving an integer overflow and out-of-bounds read or heap-based buffer overflow, or an uncaught exception. NOTE: the vendor disputes the severity and claimed vulnerability type of this issue, stating "This PoC crashes VLC, indeed, but does nothing more... this is not an integer overflow error, but an uncaught exception and I doubt that it is exploitable. This uncaught exception makes VLC abort, not execute random code, on my Linux 64bits machine." A PoC posted by the original researcher shows signs of an attacker-controlled out-of-bounds read, but the affected instruction does not involve a register that directly influences control flow.
{
"affected": [],
"aliases": [
"CVE-2013-3245"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2013-07-10T19:55:00Z",
"severity": "MODERATE"
},
"details": "** DISPUTED ** plugins/demux/libmkv_plugin.dll in VideoLAN VLC Media Player 2.0.7, and possibly other versions, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted MKV file, possibly involving an integer overflow and out-of-bounds read or heap-based buffer overflow, or an uncaught exception. NOTE: the vendor disputes the severity and claimed vulnerability type of this issue, stating \"This PoC crashes VLC, indeed, but does nothing more... this is not an integer overflow error, but an uncaught exception and I doubt that it is exploitable. This uncaught exception makes VLC abort, not execute random code, on my Linux 64bits machine.\" A PoC posted by the original researcher shows signs of an attacker-controlled out-of-bounds read, but the affected instruction does not involve a register that directly influences control flow.",
"id": "GHSA-h6w8-g5hj-f5pr",
"modified": "2024-07-03T18:31:17Z",
"published": "2022-05-17T05:07:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-3245"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2013/Jul/71"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2013/Jul/77"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2013/Jul/79"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/52956"
},
{
"type": "WEB",
"url": "http://secunia.com/blog/372"
},
{
"type": "WEB",
"url": "http://www.jbkempf.com/blog/post/2013/More-lies-from-Secunia"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/61032"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-H78R-86C6-JGP4
Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-06-30 03:36NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
{
"affected": [],
"aliases": [
"CVE-2026-9256"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-22T15:16:27Z",
"severity": "CRITICAL"
},
"details": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "GHSA-h78r-86c6-jgp4",
"modified": "2026-06-30T03:36:47Z",
"published": "2026-05-26T13:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9256"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20351"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:28212"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:28921"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:28973"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29151"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29874"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33313"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-9256"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480746"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00023.html"
},
{
"type": "WEB",
"url": "https://my.f5.com/manage/s/article/K000161377"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9256.json"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/05/22/14"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/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-H7C4-7463-QGWV
Vulnerability from github – Published: 2025-08-25 15:32 – Updated: 2025-11-03 21:34A heap-based buffer overflow vulnerability exists in the ISHNE parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted ISHNE ECG annotations file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2025-53853"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-25T14:15:32Z",
"severity": "CRITICAL"
},
"details": "A heap-based buffer overflow vulnerability exists in the ISHNE parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted ISHNE ECG annotations file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "GHSA-h7c4-7463-qgwv",
"modified": "2025-11-03T21:34:23Z",
"published": "2025-08-25T15:32:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53853"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2232"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2232"
}
],
"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-H7PV-4WQ4-68Q9
Vulnerability from github – Published: 2024-07-09 18:30 – Updated: 2024-07-09 18:30SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-38088"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T17:15:44Z",
"severity": "HIGH"
},
"details": "SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability",
"id": "GHSA-h7pv-4wq4-68q9",
"modified": "2024-07-09T18:30:52Z",
"published": "2024-07-09T18:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38088"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38088"
}
],
"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-H7QM-F9J7-JR28
Vulnerability from github – Published: 2026-03-10 18:31 – Updated: 2026-03-10 18:31Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-25172"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-10T18:18:31Z",
"severity": "HIGH"
},
"details": "Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-h7qm-f9j7-jr28",
"modified": "2026-03-10T18:31:20Z",
"published": "2026-03-10T18:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25172"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25172"
}
],
"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-H8RM-7P58-MX4H
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32InDesign Desktop versions ID20.1, ID19.5.2 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-2025-27177"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T18:15:36Z",
"severity": "HIGH"
},
"details": "InDesign Desktop versions ID20.1, ID19.5.2 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-h8rm-7p58-mx4h",
"modified": "2025-03-11T18:32:21Z",
"published": "2025-03-11T18:32:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27177"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/indesign/apsb25-19.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-H8WR-G7F7-2XMR
Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31PDF-XChange Editor PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 PDF files. 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-21762.
{
"affected": [],
"aliases": [
"CVE-2023-42076"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:15:43Z",
"severity": "HIGH"
},
"details": "PDF-XChange Editor PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 PDF files. 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-21762.",
"id": "GHSA-h8wr-g7f7-2xmr",
"modified": "2024-05-03T03:31:01Z",
"published": "2024-05-03T03:31:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42076"
},
{
"type": "WEB",
"url": "https://www.tracker-software.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1377"
}
],
"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"
}
]
}
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.