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CVE-2025-68471

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Date: January 12, 2026

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.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-68471
https://github.com/avahi/avahi/issues/678
https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1
https://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg
https://www.mend.io/vulnerability-database/CVE-2025-68471

Severity Score

Weakness Type (CWE)

Reachable Assertion

CWE-617

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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