CVE-2026-112273mediumCWE-125

CVE-2026-112273: medium-severity vulnerability in libtins

libtins through 4.6 Heap Out-of-Bounds Read via DNS::compose_name

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.9epss 0.6%
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.
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
Affected products
libtins · libtins
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CVE-2026-112274MEDIUMlibtins through 4.6 Out-of-Bounds Read via DNS::soa_record::initEPSS 0.5%