Home/CVE/Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2
CVE

CVE-2025-68471

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2

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.

MEDIUM · CVSS 6.5 EPSS 0.00022
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-617Reachable Assertion
▤

Affected Products & Versions

2
avahi< 0.9
avahiall versions
⚠

Public Exploits & PoCs

2
pocgithub.com · issues/678github.com
pocgithub.com · GHSA-56rf-42xr-qmmggithub.com
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Jan 2026 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

13
suse-csafSUSE-SU-2026:21445-1
rhsaRHSA-2026:11316Moderate
suse-csafSUSE-SU-2026:20525-1
suse-csafSUSE-SU-2026:0577-1
suse-csafSUSE-SU-2026:0422-1
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1Patch
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