{"id":"CVE-2026-112273","revision":"0a4837f87ec142fd8045d5bfbb32a012","records":[{"revision":"0a4837f87ec142fd8045d5bfbb32a012","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-112273","aliases":[],"title":"libtins through 4.6 Heap Out-of-Bounds Read via DNS::compose_name","description":"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.","state":0,"publishedAt":"2026-10-19T13:55:20.684+00:00","modifiedAt":"2026-10-22T02:51:25.912+00:00","affected":[{"ecosystem":"https://github.com/mfontanini/libtins","name":"libtins","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"libtins\",\n                    \"product\": \"libtins\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"4.6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"collectionURL\": \"https://github.com/mfontanini/libtins\",\n                    \"repo\": \"https://github.com/mfontanini/libtins\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-read","https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L338-L389","https://github.com/mfontanini/libtins","https://www.vulncheck.com/advisories/libtins-through-4.6-heap-out-of-bounds-read-via-dns-compose-name"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112273","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-112273","identifiers":["CVE-2026-112273"]},"retained":false,"historicalAffected":[]}],"coverage":[]}