Service Discovery Vulnerability in Avahi Affected by Unsuspected Network Announcements
CVE-2025-68468

6.5MEDIUM

Key Information:

Vendor

Avahi

Status
Avahi
Vendor
CVE Published:
12 January 2026

What is CVE-2025-68468?

Avahi, a critical component enabling service discovery on local networks through the mDNS/DNS-SD protocol suite, contains a vulnerability that allows it to be disrupted. When avahi-daemon receives unsolicited announcements with CNAME resource records pointing to resources with short Time-To-Live (TTL) values, it can lead to a crash of the service. This instability arises when the TTL expires, highlighting a significant risk for systems utilizing Avahi for network service discovery.

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Affected Version(s)

avahi <= 0.9-rc2

References

https://github.com/avahi/avahi/security/advisories/GHSA-c...
x_refsource_CONFIRM
https://github.com/avahi/avahi/issues/683
x_refsource_MISC
https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806...
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

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