{"id":"CVE-2026-111158","title":"EarthScope libmseed through 3.5.4 contains a heap out-of-bounds read vulnerability in ms3_detect() in parseutils.c that reads past truncated miniSEED 2 record buffers","summary":"EarthScope libmseed through 3.5.4 contains a heap out-of-bounds read vulnerability in ms3_detect() in parseutils.c that reads past truncated miniSEED 2 record buffers. Attackers can supply a 40 to 47 byte buffer passing MS2_ISVALIDHEADER…","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","cwe":["CWE-125"],"vendor":"EarthScope","product":"libmseed","affected":["libmseed <= 3.5.4"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T19:17:30.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-111158","references":[{"url":"https://github.com/EarthScope/libmseed","label":"disclosure@vulncheck.com"},{"url":"https://github.com/EarthScope/libmseed/blob/d6e6ad306de5b7bdde072e5a5e3d58ddcc11abd8/parseutils.c#L192-L234","label":"disclosure@vulncheck.com"},{"url":"https://github.com/EarthScope/libmseed/commit/c93a36a1381e944b59b10967342ee1cb94304223","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind-pwn/libmseed-ms3detect-short-header-oob-read","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/earthscope-libmseed-through-3.5.4-heap-out-of-bounds-read-via-ms3-detect","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org","exploit-available"],"ingestedAt":"2026-10-15T19:25:46.417Z","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T19:41:54.865834Z"},"slug":"CVE-2026-111158","body":"## Overview\n\nEarthScope libmseed through 3.5.4 contains a heap out-of-bounds read vulnerability in ms3_detect() in parseutils.c that reads past truncated miniSEED 2 record buffers. Attackers can supply a 40 to 47 byte buffer passing MS2_ISVALIDHEADER to msr3_parse() or ms3_detect(), over-reading up to 8 bytes and potentially crashing the process.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":222733,"id":"CVE-2026-111158","ts":1792097068121,"field":"exploit_available","old":"false","new":"true"}]}