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-M77W-6VJW-WH2F
Vulnerability from github – Published: 2023-10-03 18:30 – Updated: 2026-05-12 12:31A 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.
{
"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-PR9F-VQVG
Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30PDF-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-19640.
{
"affected": [],
"aliases": [
"CVE-2023-39492"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:15:16Z",
"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-19640.",
"id": "GHSA-m79q-pr9f-vqvg",
"modified": "2024-05-03T03:30:56Z",
"published": "2024-05-03T03:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39492"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1133"
}
],
"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"
}
]
}
GHSA-M7F4-P6PG-38MF
Vulnerability from github – Published: 2026-04-02 18:31 – Updated: 2026-04-06 21:31A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries. Successful exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.
{
"affected": [],
"aliases": [
"CVE-2026-34120"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-02T18:16:28Z",
"severity": "HIGH"
},
"details": "A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to\ninsufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.\u00a0 Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device\u2019s process to\ncrash or become unresponsive.",
"id": "GHSA-m7f4-p6pg-38mf",
"modified": "2026-04-06T21:31:33Z",
"published": "2026-04-02T18:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34120"
},
{
"type": "WEB",
"url": "https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes"
},
{
"type": "WEB",
"url": "https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes"
},
{
"type": "WEB",
"url": "https://www.tp-link.com/us/support/faq/5047"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-M7H5-4HFX-R2MH
Vulnerability from github – Published: 2023-06-07 03:30 – Updated: 2025-11-04 00:30Due to failure in validating the length provided by an attacker-crafted MSMMS packet, Wireshark version 4.0.5 and prior, in an unusual configuration, is susceptible to a heap-based buffer overflow, and possibly code execution in the context of the process running Wireshark
{
"affected": [],
"aliases": [
"CVE-2023-0667"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-07T03:15:09Z",
"severity": "MODERATE"
},
"details": "Due to failure in validating the length provided by an attacker-crafted MSMMS packet, Wireshark version 4.0.5 and prior, in an unusual configuration, is susceptible to a heap-based buffer overflow, and possibly code execution in the context of the process running Wireshark",
"id": "GHSA-m7h5-4hfx-r2mh",
"modified": "2025-11-04T00:30:37Z",
"published": "2023-06-07T03:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0667"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/issues/19086"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-02"
},
{
"type": "WEB",
"url": "https://takeonme.org/cves/CVE-2023-0667.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-M7RX-Q9F3-3P96
Vulnerability from github – Published: 2026-02-11 21:30 – Updated: 2026-02-11 21:30Heap buffer overflow in Codecs in Google Chrome prior to 145.0.7632.45 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-2314"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-11T19:15:51Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in Codecs in Google Chrome prior to 145.0.7632.45 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-m7rx-q9f3-3p96",
"modified": "2026-02-11T21:30:39Z",
"published": "2026-02-11T21:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2314"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_10.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/478560268"
}
],
"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-M7XH-CR6W-QJX3
Vulnerability from github – Published: 2022-05-17 04:10 – Updated: 2025-09-25 18:30Heap-based buffer overflow in BKCLogSvr.exe in Yokogawa CENTUM CS 3000 R3.09.50 and earlier allows remote attackers to execute arbitrary code via crafted UDP packets.
{
"affected": [],
"aliases": [
"CVE-2014-0781"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2014-03-14T10:55:00Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in BKCLogSvr.exe in Yokogawa CENTUM CS 3000 R3.09.50 and earlier allows remote attackers to execute arbitrary code via crafted UDP packets.",
"id": "GHSA-m7xh-cr6w-qjx3",
"modified": "2025-09-25T18:30:27Z",
"published": "2022-05-17T04:10:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-0781"
},
{
"type": "WEB",
"url": "https://community.rapid7.com/community/metasploit/blog/2014/03/10/yokogawa-centum-cs3000-vulnerabilities"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-14-070-01a"
},
{
"type": "WEB",
"url": "http://ics-cert.us-cert.gov/advisories/ICSA-14-070-01"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/66130"
},
{
"type": "WEB",
"url": "http://www.yokogawa.com/dcs/security/ysar/dcs-ysar-index-en.htm."
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-M84V-59H4-H9JQ
Vulnerability from github – Published: 2024-10-08 18:33 – Updated: 2024-10-08 18:33Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-43564"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-08T18:15:23Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-m84v-59h4-h9jq",
"modified": "2024-10-08T18:33:16Z",
"published": "2024-10-08T18:33:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43564"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43564"
}
],
"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-M864-5788-G574
Vulnerability from github – Published: 2022-09-25 00:00 – Updated: 2022-09-27 00:00A heap out-of-bounds memory write exists in FFMPEG since version 5.1. The size calculation in build_open_gop_key_points() goes through all entries in the loop and adds sc->ctts_data[i].count to sc->sample_offsets_count. This can lead to an integer overflow resulting in a small allocation with `av_calloc(). An attacker can cause remote code execution via a malicious mp4 file. We recommend upgrading past commit c953baa084607dd1d84c3bfcce3cf6a87c3e6e05
{
"affected": [],
"aliases": [
"CVE-2022-2566"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-190",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-23T12:15:00Z",
"severity": "HIGH"
},
"details": "A heap out-of-bounds memory write exists in FFMPEG since version 5.1. The size calculation in `build_open_gop_key_points()` goes through all entries in the loop and adds `sc-\u003ectts_data[i].count` to `sc-\u003esample_offsets_count`. This can lead to an integer overflow resulting in a small allocation with `av_calloc(). An attacker can cause remote code execution via a malicious mp4 file. We recommend upgrading past commit c953baa084607dd1d84c3bfcce3cf6a87c3e6e05",
"id": "GHSA-m864-5788-g574",
"modified": "2022-09-27T00:00:17Z",
"published": "2022-09-25T00:00:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2566"
},
{
"type": "WEB",
"url": "https://github.com/FFmpeg/FFmpeg/commit/c953baa084607dd1d84c3bfcce3cf6a87c3e6e05"
}
],
"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-M874-43G7-RRC9
Vulnerability from github – Published: 2024-06-11 18:30 – Updated: 2024-06-11 18:30Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-30095"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-11T17:15:58Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-m874-43g7-rrc9",
"modified": "2024-06-11T18:30:49Z",
"published": "2024-06-11T18:30:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30095"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30095"
}
],
"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-M8J5-W72J-565Q
Vulnerability from github – Published: 2024-02-13 18:38 – Updated: 2024-02-13 18:38Windows Kernel Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-21341"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-13T18:15:49Z",
"severity": "MODERATE"
},
"details": "Windows Kernel Remote Code Execution Vulnerability",
"id": "GHSA-m8j5-w72j-565q",
"modified": "2024-02-13T18:38:23Z",
"published": "2024-02-13T18:38:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21341"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21341"
}
],
"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"
}
]
}
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.