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CVE-2025-68471

Avahi has a reachable assertion in lookup_start

Published: Jan 12, 2026Updated: Jan 16, 2026 Sources: CVE List NVD BDUCWE-617
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.4%
Top 73.0%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-617

Affected Products

avahiavahi
On-prem
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Platform V SberLinux OS ServerАО «СберТех»
On-premOS
Operating Systems / linux-distro
AvahiThe Avahi Project
On-prem
Networking Infrastructure / dns-dhcp-ntp
avahioss-projectOperating Systemsaka avahi-daemon
ооо «ред софт»commercialRUOperating Systemsaka red soft
ао «сбертех»commercialRUOperating Systemsaka ao sbertech, сбертех
the avahi projectoss-projectNetworking Infrastructureaka avahi

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg
github.com
https://github.com/avahi/avahi/issues/678
github.com
https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1
github.com
and 6 more references View all →

Timeline

Published
Jan 12, 2026
Last Updated
Jan 16, 2026

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