Vulnerability Description
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version 0.9-rc4.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Avahi | Avahi | < 0.9 |
Related Weaknesses (CWE)
References
- https://github.com/avahi/avahi/commit/625ca0fac19229f6dfa3a6c6b698ae657187e50cPatch
- https://github.com/avahi/avahi/pull/891Issue TrackingPatch
- https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvcExploitPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/04/11/9ExploitMailing ListThird Party Advisory
- https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvcExploitPatchVendor Advisory
FAQ
What is CVE-2026-34933?
CVE-2026-34933 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a s...
How severe is CVE-2026-34933?
CVE-2026-34933 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34933?
Check the references section above for vendor advisories and patch information. Affected products include: Avahi Avahi.