Medium 5.5Published Apr 3, 2026

CVE-2026-34933Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite.

Updated under an hour ago (2026-10-19 07:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for avahi

Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-617
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

avahi avahi avahi:avahi	before 0.9; 0.9; 0.9; 0.9	NVD

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.