{"id":"CVE-2026-116728","title":"libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x0024","summary":"libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileV…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-125"],"vendor":"libyal","product":"libfvde","affected":["libfvde <= 20260923"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T21:52:30.883Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116728","references":[{"url":"https://github.com/libyal/libfvde/issues/70","label":"GitHub Issue #70"},{"url":"https://github.com/libyal/libfvde"},{"url":"https://github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8f"},{"url":"https://github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metadata.c#L3798-L3813"},{"url":"https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read"},{"url":"https://www.vulncheck.com/advisories/libfvde-through-20260923-heap-out-of-bounds-read-via-libfvde-encrypted-metadata-read-type-0x0024","label":"VulnCheck Advisory: libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x0024"}],"tags":["cve.org"],"epss":0.00136,"epssPercentile":0.03005,"ingestedAt":"2026-10-27T16:11:59.120Z","slug":"CVE-2026-116728","body":"## Overview\n\nlibfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileVault 2 Core Storage volume that makes libfvde_volume_open() copy past the heap block buffer, crashing the application.\n\n## Affected\n\n- `libfvde <= 20260923`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}