VULNERABILITY INTELLIGENCE

CVE-2025-5688

CVSS score7.5 HIGH

EPSS probability0.35%

CISA KEVNot currently listed

Published2025-06-04

Last modified2026-06-17

Description

We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS names. This issue only affects systems using Buffer Allocation Scheme 1 with LLMNR or mDNS enabled. Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.