Common Weakness Enumeration
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().
6220 vulnerabilities reference this CWE, most recent first.
GHSA-M4C2-Q6HR-P6W3
Vulnerability from github – Published: 2026-08-25 21:31 – Updated: 2026-08-26 18:31
VLAI
Details
Buffer overflow in ANGLE in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-79142"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-25T21:18:09Z",
"severity": "HIGH"
},
"details": "Buffer overflow in ANGLE in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-m4c2-q6hr-p6w3",
"modified": "2026-08-26T18:31:46Z",
"published": "2026-08-25T21:31:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79142"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/529509587"
}
],
"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-M57W-CHFC-6R6H
Vulnerability from github – Published: 2026-10-13 21:35 – Updated: 2026-10-13 21:35
VLAI
Details
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to disclose information locally.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-85831"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:21:08Z",
"severity": "MODERATE"
},
"details": "Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to disclose information locally.",
"id": "GHSA-m57w-chfc-6r6h",
"modified": "2026-10-13T21:35:58Z",
"published": "2026-10-13T21:35:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85831"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85831"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-M5W5-HGW3-8RFX
Vulnerability from github – Published: 2024-07-09 18:30 – Updated: 2024-07-09 18:30
VLAI
Details
SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-35271"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T17:15:19Z",
"severity": "HIGH"
},
"details": "SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability",
"id": "GHSA-m5w5-hgw3-8rfx",
"modified": "2024-07-09T18:30:50Z",
"published": "2024-07-09T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35271"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-35271"
}
],
"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-M62J-63MF-XR95
Vulnerability from github – Published: 2026-05-11 18:31 – Updated: 2026-07-23 12:31
VLAI
Details
A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.
Severity
8.4 (High)
{
"affected": [],
"aliases": [
"CVE-2026-4892"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-11T18:16:41Z",
"severity": "HIGH"
},
"details": "A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.",
"id": "GHSA-m62j-63mf-xr95",
"modified": "2026-07-23T12:31:49Z",
"published": "2026-05-11T18:31:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4892"
},
{
"type": "WEB",
"url": "https://github.com/NixOS/nixpkgs/pull/519082"
},
{
"type": "WEB",
"url": "https://github.com/NixOS/nixpkgs/pull/519093"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19158"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19373"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20589"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34508"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:40762"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-4892"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458518"
},
{
"type": "WEB",
"url": "https://github.com/pi-hole/FTL/releases/tag/v6.6.2"
},
{
"type": "WEB",
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4892.json"
},
{
"type": "WEB",
"url": "https://thekelleys.org.uk/dnsmasq"
},
{
"type": "WEB",
"url": "https://thekelleys.org.uk/dnsmasq/CVE"
},
{
"type": "WEB",
"url": "https://www.kb.cert.org/vuls/id/471747"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-M695-35XV-PJCM
Vulnerability from github – Published: 2023-12-01 00:31 – Updated: 2023-12-01 00:31
VLAI
Details
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
Severity
9.1 (Critical)
{
"affected": [],
"aliases": [
"CVE-2023-5908"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-30T22:15:09Z",
"severity": "CRITICAL"
},
"details": "\n\n\n\n\nKEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.\n\n\n\n\n",
"id": "GHSA-m695-35xv-pjcm",
"modified": "2023-12-01T00:31:00Z",
"published": "2023-12-01T00:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5908"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-334-03"
}
],
"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:H",
"type": "CVSS_V3"
}
]
}
GHSA-M6G3-MRP2-C625
Vulnerability from github – Published: 2022-04-07 00:00 – Updated: 2022-04-15 00:01
VLAI
Details
Heap buffer overflow in libr/bin/format/mach0/mach0.c in GitHub repository radareorg/radare2 prior to 5.8.6. If address sanitizer is disabled during the compiling, the program should executes into the r_str_ncpy function. Therefore I think it is very likely to be exploitable. For more general description of heap buffer overflow, see CWE.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-1240"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-06T11:15:00Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in libr/bin/format/mach0/mach0.c in GitHub repository radareorg/radare2 prior to 5.8.6. If address sanitizer is disabled during the compiling, the program should executes into the `r_str_ncpy` function. Therefore I think it is very likely to be exploitable. For more general description of heap buffer overflow, see [CWE](https://cwe.mitre.org/data/definitions/122.html).",
"id": "GHSA-m6g3-mrp2-c625",
"modified": "2022-04-15T00:01:08Z",
"published": "2022-04-07T00:00:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1240"
},
{
"type": "WEB",
"url": "https://github.com/radareorg/radare2/commit/ca8d8b39f3e34a4fd943270330b80f1148129de4"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/e589bd97-4c74-4e79-93b5-0951a281facc"
}
],
"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-M73H-R7P8-3RVM
Vulnerability from github – Published: 2026-09-10 09:31 – Updated: 2026-09-10 09:31
VLAI
Details
A heap-based buffer overflow vulnerability in the PC bridge protocol decoder of BoschSensortec COINES_SDK (versions 2.10 through 2.12.2) allows attackers to cause a denial of service (process crash) or potentially execute arbitrary code.
The bridge decoder ({{bridge_decoder.c}}) trusts the packet length field provided by the external device and forwards it to the host response queue ({{mqueue_add_data}}) without validating the bounds of the destination buffer.
A malicious or compromised USB or Bluetooth Low Energy (BLE) peripheral can advertise a payload size up to ~3 KB, which exceeds the default queue slot size of 255 bytes.
This results in an unbounded heap overwrite ({{memcpy}}), corrupting adjacent heap metadata on the host system when processing the device's response.
Severity
8.0 (High)
{
"affected": [],
"aliases": [
"CVE-2026-42807"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-10T09:17:02Z",
"severity": "HIGH"
},
"details": "A heap-based buffer overflow vulnerability in the PC bridge protocol decoder of BoschSensortec COINES_SDK (versions 2.10 through 2.12.2) allows attackers to cause a denial of service (process crash) or potentially execute arbitrary code. \n\nThe bridge decoder ({{bridge_decoder.c}}) trusts the packet length field provided by the external device and forwards it to the host response queue ({{mqueue_add_data}}) without validating the bounds of the destination buffer. \n\nA malicious or compromised USB or Bluetooth Low Energy (BLE) peripheral can advertise a payload size up to ~3 KB, which exceeds the default queue slot size of 255 bytes. \n\nThis results in an unbounded heap overwrite ({{memcpy}}), corrupting adjacent heap metadata on the host system when processing the device\u0027s response.",
"id": "GHSA-m73h-r7p8-3rvm",
"modified": "2026-09-10T09:31:33Z",
"published": "2026-09-10T09:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42807"
},
{
"type": "WEB",
"url": "https://psirt.bosch.com/security-advisories/BOSCH-SA-223618.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-M77Q-63MH-Q776
Vulnerability from github – Published: 2026-09-08 18:33 – Updated: 2026-09-08 18:33
VLAI
Details
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-83971"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:21:06Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-m77q-63mh-q776",
"modified": "2026-09-08T18:33:36Z",
"published": "2026-09-08T18:33:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83971"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83971"
}
],
"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-M77W-6VJW-WH2F
Vulnerability from github – Published: 2023-10-03 18:30 – Updated: 2026-05-12 12:31
VLAI
Details
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-4911"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-03T18:15:10Z",
"severity": "HIGH"
},
"details": "A buffer overflow was discovered in the GNU C Library\u0027s dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.",
"id": "GHSA-m77w-6vjw-wh2f",
"modified": "2026-05-12T12:31:29Z",
"published": "2023-10-03T18:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4911"
},
{
"type": "WEB",
"url": "https://www.qualys.com/cve-2023-4911"
},
{
"type": "WEB",
"url": "https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/52479"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5514"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4911"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20231013-0006"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202310-03"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-831302.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2238352"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-4911"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:0033"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2023:5476"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2023:5455"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2023:5454"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2023:5453"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHBA-2024:2413"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Oct/11"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/03/2"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/03/3"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/05/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/13/11"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/14/3"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/14/5"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/10/14/6"
}
],
"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-M79Q-5FG4-88GP
Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 18:32
VLAI
Details
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-69556"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:19:24Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-m79q-5fg4-88gp",
"modified": "2026-09-08T18:32:45Z",
"published": "2026-09-08T18:32:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69556"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69556"
}
],
"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
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
Operation
Build and Compilation
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
Operation
Build and Compilation
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
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
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.