{"schema":"threatline.record/2","record":{"id":"CVE-2026-110714","aliases":[],"summary":"libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer Underflow","details":"libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERY_INFO reply, bypassing ACE bounds checks and crashing the client.","categories":["Unclassified"],"product":"libsmb2","vendor":"sahlberg","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110714","source_modified_at":"2026-10-20T01:29:23.174Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"libsmb2","vendor":"sahlberg","versions":[{"version":"0","status":"affected","versionType":"custom","lessThanOrEqual":"6.2"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00545,"percentile":0.44974,"score_date":"2026-10-23"},"published_at":"2026-10-14T15:01:29.077Z","modified_at":"2026-10-20T01:29:23.174Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110714","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T01:29:23.174Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110714","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@haind-pwn/libsmb2-query-info-reply-oob-read","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://github.com/sahlberg/libsmb2/blob/d67e213a5c4e7e4969fd81f0b95e4ca5831fbba1/lib/smb2-data-security-descriptor.c#L266","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/sahlberg/libsmb2/commit/523abe20be3207011a936db47f1d3bab79c05450","tags":["patch"]},{"source":"CVE List","url":"https://github.com/sahlberg/libsmb2","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/libsmb2-through-6.2-heap-out-of-bounds-read-via-decode-acl-integer-underflow","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-20T01:29:12.014593Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T01:29:23.174Z","content_hash":"cb35905652141de63414ced1245999c189d3bbaf8995be996793d9484373635d"}}