{"id":"CVE-2026-110712","title":"libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength","summary":"libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing m…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"sahlberg","product":"libsmb2","affected":["libsmb2 <= 6.2"],"published":"2026-10-14","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:18:44.867","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110712","references":[{"url":"https://github.com/sahlberg/libsmb2","label":"disclosure@vulncheck.com"},{"url":"https://github.com/sahlberg/libsmb2/blob/d67e213a5c4e7e4969fd81f0b95e4ca5831fbba1/lib/smb2-data-file-info.c#L202","label":"disclosure@vulncheck.com"},{"url":"https://github.com/sahlberg/libsmb2/commit/57bee9fb941a39307145b82e4dd1718862f30a74","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind-pwn/libsmb2-query-info-reply-oob-read","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/libsmb2-through-6.2-heap-out-of-bounds-read-via-smb2-decode-file-all-info","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00441,"epssPercentile":0.38181,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T17:39:48.080087Z"},"ingestedAt":"2026-10-14T16:40:32.115Z","slug":"CVE-2026-110712","body":"## Overview\n\nlibsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":221436,"id":"CVE-2026-110712","ts":1792031239195,"field":"exploit_available","old":"false","new":"true"}]}