CVE-2025-68471

MEDIUM
2026-01-12 [email protected]
6.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 16, 2026 - 16:53 vuln.today
Public exploit code
Patch Released
Jan 16, 2026 - 16:53 nvd
Patch available
CVE Published
Jan 12, 2026 - 18:15 nvd
MEDIUM 6.5

Tags

Denial Of Service Avahi Redhat Suse

Description

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.

Analysis

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. [CVSS 6.5 MEDIUM]

Technical Context

Classified as CWE-617 (Reachable Assertion). Affects Avahi. 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.

Affected Products

Vendor: Avahi. Product: Avahi.

Remediation

A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.

Priority Score

53
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: +20

Vendor Status

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CVE-2025-68471 vulnerability details – vuln.today
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