{"id":"CVE-2026-111133","revision":"8556d54c538e4e38a4520969146935fe","records":[{"revision":"8556d54c538e4e38a4520969146935fe","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111133","aliases":[],"title":"libfsapfs through 20260921 Heap Out-of-Bounds Read via libfsapfs_key_encrypted_key_read_data","description":"libfsapfs through 20260921 contains an integer underflow in libfsapfs_key_encrypted_key_read_data() that allows attackers to trigger heap out-of-bounds reads via crafted KEK attributes. Attackers can supply a crafted encrypted APFS image with malformed HMAC or wrapped KEK attribute lengths to crash fsapfsinfo, pyfsapfs, dfVFS or plaso and read adjacent heap memory before password checks.","state":0,"publishedAt":"2026-10-15T18:57:27.812+00:00","modifiedAt":"2026-10-15T19:45:11.041+00:00","affected":[{"ecosystem":"https://github.com","name":"libfsapfs","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"libyal\",\n                    \"product\": \"libfsapfs\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"20260921\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/libyal/libfsapfs\",\n                    \"collectionURL\": \"https://github.com\",\n                    \"repo\": \"https://github.com/libyal/libfsapfs\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","score":6.1,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haind-pwn/libfsapfs-key-encrypted-key-attribute-oob-read","https://github.com/libyal/libfsapfs/blob/4c7c1c21f3cfc7d35f0b34b8a47f1f1562d27bbb/libfsapfs/libfsapfs_key_encrypted_key.c#L321-L333","https://github.com/libyal/libfsapfs/blob/4c7c1c21f3cfc7d35f0b34b8a47f1f1562d27bbb/libfsapfs/libfsapfs_key_encrypted_key.c#L528-L540","https://github.com/libyal/libfsapfs","https://www.vulncheck.com/advisories/libfsapfs-through-20260921-heap-out-of-bounds-read-via-libfsapfs-key-encrypted-key-read-data"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111133","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111133","identifiers":["CVE-2026-111133"]},"retained":false,"historicalAffected":[]}],"coverage":[]}