{"schema":"threatline.record/2","record":{"id":"CVE-2026-112273","aliases":[],"summary":"libtins through 4.6 Heap Out-of-Bounds Read via DNS::compose_name","details":"libtins through 4.6 contains a heap out-of-bounds read vulnerability in DNS::compose_name in src/dns.cpp that allows remote attackers to read past the packet buffer by sending a label ending exactly at the packet end. Attackers can deliver crafted DNS packets whose additional, answer, or authority records trigger a one-byte read when parsed, crashing applications on hardened allocators.","categories":["Unclassified"],"product":"libtins","vendor":"libtins","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-112273","source_modified_at":"2026-10-22T02:51:25.912Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"libtins","vendor":"libtins","versions":[{"version":"0","lessThanOrEqual":"4.6","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00472,"percentile":0.39915,"score_date":"2026-10-23"},"published_at":"2026-10-19T13:55:20.684Z","modified_at":"2026-10-22T02:51:25.912Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-112273","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T02:51:25.912Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112273","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-read","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L338-L389","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/mfontanini/libtins","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/libtins-through-4.6-heap-out-of-bounds-read-via-dns-compose-name","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://hackmd.io/@haindpwn/cve-2026-112273-112274-libtins-dns-name-parsing-oob-read","tags":["exploit"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-22T02:49:37.004511Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-22T02:51:25.912Z","content_hash":"43e40757042e112408fe05988632774f21dddb106f8a15350645149a07b6742b"}}