CVE-2026-112273

MediumCVSS 5.3/10Last modified Oct 22, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

Published: Oct 19, 2026
Last modified: Oct 22, 2026
NVD status: Deferred

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