CVE-2026-34933

Name: CVE-2026-34933
Creator: NVD / NIST
Published: 2026-04-03T23:17:05.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2026-34933 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.20%

10.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions	Update
Avahi	Avahi	< 0.9	—
Avahi	Avahi	0.9	Rc1

References

https://github.com/avahi/avahi/commit/625ca0fac19229f6dfa3a6c6b698ae657187e50cPatch
https://github.com/avahi/avahi/pull/891Issue Tracking, Patch
https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvcExploit, Patch, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/11/9Exploit, Mailing List, Third Party Advisory
https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvcExploit, Patch, Vendor Advisory

Timeline

Published: Apr 3, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-34933?

How severe is CVE-2026-34933?

CVE-2026-34933 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2026-34933?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-34933?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST