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().
4111 vulnerabilities reference this CWE, most recent first.
GHSA-2F84-GMQ2-V8M2
Vulnerability from github – Published: 2025-02-11 18:31 – Updated: 2025-02-11 18:31Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2025-21208"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-11T18:15:31Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-2f84-gmq2-v8m2",
"modified": "2025-02-11T18:31:37Z",
"published": "2025-02-11T18:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21208"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21208"
}
],
"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-2FJW-WHXM-9V4Q
Vulnerability from github – Published: 2025-11-25 23:18 – Updated: 2025-12-01 16:04A heap-buffer-overflow vulnerability exists in the Rust wrapper for libnftnl, triggered via the nftnl::Batch::with_page_size constructor. When a small or malformed page size is provided, the underlying C code allocates an insufficient buffer, leading to out-of-bounds writes during batch initialization.
The flaw was fixed in commit 94a286f by adding an overflow check:
batch_page_size
.checked_add(crate::nft_nlmsg_maxsize())
.expect("batch_page_size is too large and would overflow");
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 0.8.0"
},
"package": {
"ecosystem": "crates.io",
"name": "nftnl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": true,
"github_reviewed_at": "2025-11-25T23:18:37Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "A heap-buffer-overflow vulnerability exists in the Rust wrapper for libnftnl, triggered via the nftnl::Batch::with_page_size constructor. When a small or malformed page size is provided, the underlying C code allocates an insufficient buffer, leading to out-of-bounds writes during batch initialization.\n\nThe flaw was fixed in commit 94a286f by adding an overflow check:\n```Rust\nbatch_page_size\n .checked_add(crate::nft_nlmsg_maxsize())\n .expect(\"batch_page_size is too large and would overflow\");\n```",
"id": "GHSA-2fjw-whxm-9v4q",
"modified": "2025-12-01T16:04:47Z",
"published": "2025-11-25T23:18:37Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/mullvad/nftnl-rs/issues/76#issue-3528876468"
},
{
"type": "WEB",
"url": "https://github.com/mullvad/nftnl-rs/commit/94a286f87e88f431913d19668246de9006790125"
},
{
"type": "PACKAGE",
"url": "https://github.com/mullvad/nftnl-rs"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2025-0126.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N",
"type": "CVSS_V4"
}
],
"summary": "libnftnl has Heap-based Buffer Overflow in nftnl::Batch::with_page_size (nftnl-rs)"
}
GHSA-2G7F-FM5G-52CJ
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-2024-49085"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-12T02:04:33Z",
"severity": "HIGH"
},
"details": "Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability",
"id": "GHSA-2g7f-fm5g-52cj",
"modified": "2024-12-12T03:33:04Z",
"published": "2024-12-12T03:33:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49085"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49085"
}
],
"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-2G8G-F92J-G4GQ
Vulnerability from github – Published: 2026-07-07 12:31 – Updated: 2026-07-08 15:31A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet that is copied into a 512-byte heap receive buffer without a bounds check in sasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of attacker-controlled data to overflow the buffer, causing a denial of service (server crash). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, any enrolled host, or any service account can trigger this vulnerability over the network after authenticating via GSSAPI. The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow in schema.c only.
{
"affected": [],
"aliases": [
"CVE-2026-11610"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-07T10:16:39Z",
"severity": "HIGH"
},
"details": "A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server\n(389-ds-base). After a successful SASL bind with integrity protection (SSF \u003e 0),\nan authenticated attacker can send a specially crafted oversized LDAP UNBIND packet\nthat is copied into a 512-byte heap receive buffer without a bounds check in\nsasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of\nattacker-controlled data to overflow the buffer, causing a denial of service (server\ncrash). In FreeIPA and Red Hat Identity Management deployments, any domain user with\na valid Kerberos ticket, any enrolled host, or any service account can trigger this\nvulnerability over the network after authenticating via GSSAPI.\nThe vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and\nwas not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow\nin schema.c only.",
"id": "GHSA-2g8g-f92j-g4gq",
"modified": "2026-07-08T15:31:49Z",
"published": "2026-07-07T12:31:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11610"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484414"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-11610"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36671"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36670"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36660"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36641"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36585"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36209"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36208"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36206"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36205"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36204"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36202"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36201"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36200"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36198"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36197"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36196"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36195"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2GJ6-9MMJ-R597
Vulnerability from github – Published: 2026-03-20 03:31 – Updated: 2026-03-20 15:31Heap buffer overflow in CSS in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-4442"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-20T02:16:36Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in CSS in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-2gj6-9mmj-r597",
"modified": "2026-03-20T15:31:10Z",
"published": "2026-03-20T03:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4442"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/484751092"
}
],
"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-2GJR-3WMX-7V5F
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2026-55125"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:18Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.",
"id": "GHSA-2gjr-3wmx-7v5f",
"modified": "2026-07-14T18:32:35Z",
"published": "2026-07-14T18:32:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55125"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55125"
}
],
"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-2GQ5-X5QP-V68M
Vulnerability from github – Published: 2026-03-03 15:31 – Updated: 2026-03-03 18:31A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted .wft file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2026-20777"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-03T15:16:18Z",
"severity": "HIGH"
},
"details": "A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted .wft file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "GHSA-2gq5-x5qp-v68m",
"modified": "2026-03-03T18:31:32Z",
"published": "2026-03-03T15:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20777"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2362"
}
],
"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"
}
]
}
GHSA-2HJ2-FCR9-9P35
Vulnerability from github – Published: 2023-06-13 09:30 – Updated: 2025-10-22 00:32A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.
{
"affected": [],
"aliases": [
"CVE-2023-27997"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-13T09:15:16Z",
"severity": "CRITICAL"
},
"details": "A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.",
"id": "GHSA-2hj2-fcr9-9p35",
"modified": "2025-10-22T00:32:44Z",
"published": "2023-06-13T09:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27997"
},
{
"type": "WEB",
"url": "https://fortiguard.com/psirt/FG-IR-23-097"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27997"
}
],
"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-2HRP-X9MQ-5QP2
Vulnerability from github – Published: 2025-04-08 18:34 – Updated: 2025-04-08 18:34Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-21205"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T18:15:45Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-2hrp-x9mq-5qp2",
"modified": "2025-04-08T18:34:44Z",
"published": "2025-04-08T18:34:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21205"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21205"
}
],
"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-2HVW-R4RP-MJPP
Vulnerability from github – Published: 2023-08-08 18:30 – Updated: 2024-04-04 06:41Buffer overflow in Zoom Clients before 5.14.5 may allow an unauthenticated user to enable a denial of service via network access.
{
"affected": [],
"aliases": [
"CVE-2023-36532"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-08T18:15:13Z",
"severity": "HIGH"
},
"details": "Buffer overflow in Zoom Clients before 5.14.5 may allow an unauthenticated user to enable a denial of service via network access.",
"id": "GHSA-2hvw-r4rp-mjpp",
"modified": "2024-04-04T06:41:53Z",
"published": "2023-08-08T18:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36532"
},
{
"type": "WEB",
"url": "https://explore.zoom.us/en/trust/security/security-bulletin"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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.