{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-4692", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2023-08-31T21:53:09.692Z", "datePublished": "2023-10-25T10:27:29.173Z", "dateUpdated": "2026-07-21T05:08:54.432Z" }, "containers": { "cna": { "title": "Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution", "metrics": [ { "other": { "content": { "value": "Low", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. 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"https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html" }, { "url": "https://seclists.org/oss-sec/2023/q4/37" } ], "datePublic": "2023-10-03T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-122", "description": "Heap-based Buffer Overflow", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-122: Heap-based Buffer Overflow", "timeline": [ { "lang": "en", "time": "2023-08-31T00:00:00.000Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2023-10-03T00:00:00.000Z", "value": "Made public." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-07-21T05:08:54.432Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://access.redhat.com/errata/RHSA-2024:2456", "name": "RHSA-2024:2456", "tags": [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred" ] }, { "url": 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