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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.","state":0,"publishedAt":"2026-10-15T18:57:46.924+00:00","modifiedAt":"2026-10-15T19:42:14.325+00:00","affected":[{"ecosystem":"https://github.com/EarthScope/libmseed","name":"libmseed","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"EarthScope\",\n                    \"product\": \"libmseed\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"3.5.4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"collectionURL\": \"https://github.com/EarthScope/libmseed\",\n                    \"repo\": \"https://github.com/EarthScope/libmseed\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.8,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haind-pwn/libmseed-ms3detect-short-header-oob-read","https://github.com/EarthScope/libmseed/blob/d6e6ad306de5b7bdde072e5a5e3d58ddcc11abd8/parseutils.c#L192-L234","https://github.com/EarthScope/libmseed/commit/c93a36a1381e944b59b10967342ee1cb94304223","https://github.com/EarthScope/libmseed","https://www.vulncheck.com/advisories/earthscope-libmseed-through-3.5.4-heap-out-of-bounds-read-via-ms3-detect"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111158","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111158","identifiers":["CVE-2026-111158"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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