Denial of Service Vulnerability in Avahi Daemon by Avahi
CVE-2025-68471

6.5MEDIUM

Key Information:

Vendor

Avahi

Status
Avahi
Vendor
CVE Published:
12 January 2026

What is CVE-2025-68471?

Avahi, a service discovery system using mDNS/DNS-SD protocols, is susceptible to a denial of service attack. In versions 0.9-rc2 and earlier, an attacker can crash the avahi-daemon by sending two unsolicited CNAME resource record announcements within a 2-second interval. This vulnerability could lead to service interruptions on networks relying on Avahi for local service discovery.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

avahi <= 0.9-rc2

References

https://github.com/avahi/avahi/security/advisories/GHSA-5...
x_refsource_CONFIRM
https://github.com/avahi/avahi/issues/678
x_refsource_MISC
https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.