CVE-2025-68468
Avahi has a reachable assertion in lookup_multicast_callback
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 unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes.
INFO
Published Date :
Jan. 12, 2026, 6:15 p.m.
Last Modified :
Jan. 16, 2026, 4:52 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Avahi to a version that fixes this issue.
- Apply security patches from the vendor.
- Monitor network for suspicious announcements.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-68468.
| URL | Resource |
|---|---|
| https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a | Patch |
| https://github.com/avahi/avahi/issues/683 | Issue Tracking Patch |
| https://github.com/avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-68468 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-68468
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-68468 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-68468 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 16, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:* versions up to (excluding) 0.9 *cpe:2.3:a:avahi:avahi:0.9:rc1:*:*:*:*:*:* Added Reference Type GitHub, Inc.: https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a Types: Patch Added Reference Type GitHub, Inc.: https://github.com/avahi/avahi/issues/683 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52 Types: Vendor Advisory -
New CVE Received by [email protected]
Jan. 12, 2026
Action Type Old Value New Value Added 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 unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-617 Added Reference https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a Added Reference https://github.com/avahi/avahi/issues/683 Added Reference https://github.com/avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52