{"id":"CVE-2026-111140","title":"libregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset","summary":"libregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset. Attackers can supply a crafted version 1.0/1.1 R…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","cwe":["CWE-125"],"vendor":"libyal","product":"libregf","affected":["libregf <= 20260526"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T19:17:28.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-111140","references":[{"url":"https://github.com/libyal/libregf","label":"disclosure@vulncheck.com"},{"url":"https://github.com/libyal/libregf/blob/1a4bd856484263caa4a5e0d6ba377c3dc69150c7/libregf/libregf_value_item.c#L789-L935","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind-pwn/libregf-value-data-offset-oob-read","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/libregf-through-20260526-heap-out-of-bounds-read-via-libregf-value-item-read-value-data","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org","exploit-available"],"ingestedAt":"2026-10-15T19:25:46.411Z","epss":0.00127,"epssPercentile":0.02385,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-21T01:19:30.510964Z"},"slug":"CVE-2026-111140","body":"## Overview\n\nlibregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset. Attackers can supply a crafted version 1.0/1.1 REGF hive with a value data cell ending its hive bin to leak adjacent heap bytes or crash parsers like regfexport and plaso.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":226712,"id":"CVE-2026-111140","ts":1792546636719,"field":"exploit_available","old":"false","new":"true"}]}