{"id":"CVE-2026-112273","published":"2026-10-19T14:17:05.080","lastModified":"2026-10-19T21:14:14.150","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.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://github.com/mfontanini/libtins","tags":[]},{"url":"https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L338-L389","tags":[]},{"url":"https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-read","tags":[]},{"url":"https://www.vulncheck.com/advisories/libtins-through-4.6-heap-out-of-bounds-read-via-dns-compose-name","tags":[]}],"exploitRefs":[{"url":"https://github.com/mfontanini/libtins","tags":[]},{"url":"https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L338-L389","tags":[]}],"hasPoc":true,"ai":null}