{"id":"CVE-2026-116743","title":"libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_data","summary":"libyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat …","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-415"],"vendor":"libyal","product":"libmsiecf","affected":["libmsiecf <= 20260525"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T21:52:42.185Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116743","references":[{"url":"https://github.com/libyal/libmsiecf/issues/6","label":"GitHub Issue #6"},{"url":"https://github.com/libyal/libmsiecf"},{"url":"https://github.com/libyal/libmsiecf/commit/a99a703d190d62f6c21b6225cf84ce80037e45d5"},{"url":"https://github.com/libyal/libmsiecf/blob/20260525/libmsiecf/libmsiecf_url_values.c#L824"},{"url":"https://hackmd.io/@haindpwn/libmsiecf-url-record-partial-recovery-double-free"},{"url":"https://www.vulncheck.com/advisories/libyal-libmsiecf-through-20260525-double-free-via-libmsiecf-url-values-read-data","label":"VulnCheck Advisory: libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_data"}],"tags":["cve.org"],"epss":0.00127,"epssPercentile":0.02326,"ingestedAt":"2026-10-27T16:11:59.125Z","slug":"CVE-2026-116743","body":"## Overview\n\nlibyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat file whose recovered partial record has an oversized unknown_offset, crashing forensic tools processing it.\n\n## Affected\n\n- `libmsiecf <= 20260525`\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":[]}