CVE-2025-68471
MEDIUMavahi < 0.9 - Denial of Service via CNAME Resource Record Announcements
Title source: llmDescription
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.
References (3)
Core 3
Core References
Vendor Advisory, Exploit, Patch x_refsource_confirm
https://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg
Issue Tracking, Exploit, Patch x_refsource_misc
https://github.com/avahi/avahi/issues/678
Patch x_refsource_misc
https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1
Scores
CVSS v3
6.5
EPSS
0.0035
EPSS Percentile
26.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-617
Status
published
Products (2)
avahi/avahi
0.9 rc1
avahi/avahi
< 0.9
Published
Jan 12, 2026
Tracked Since
Feb 18, 2026