CVE-2025-68471

EUVD-2025-206278
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
GitHub_MCNA
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
avahiavahi
𝑥
< 0.9
avahiavahi
0.9:rc1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
avahi
bookworm
no-dsa
bullseye
postponed
bullseye (security)
vulnerable
forky
0.8-18
fixed
sid
0.8-18
fixed
trixie
no-dsa
Common Weakness Enumeration
References
https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1
https://github.com/avahi/avahi/issues/678
https://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg