CVE-2025-68471: Avahi

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart.

Affected products

• Avahi Avahi: before 0.9 (fixed in 0.9); version 0.9 only

Published 2026-01-12. Last modified 2026-06-17.