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Vulnerabilities

Vulnerability · CVE-2026-34933

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

Published Apr 3, 2026 · catalog updated Jul 24, 2026 · Avahi is a system

Check if you run it

No confirmed exploitation is on record for CVE-2026-34933. EPSS is 0.16%. Act only if a listed version of Avahi is a system is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Avahi is a system).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
Remediation
Advisory link
Affected products
cpe avahi/avahi

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe avahi/avahi0.9

How to fix CVE-2026-34933

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-34933. EPSS is 0.16%. Act only if a listed version of Avahi is a system is installed.

Which versions are affected?

Compare what you have installed with 0.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-617. EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 3, 2026 · NIST NVD

    Detected

    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.

  2. Jul 24, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-34933

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-34933

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-34933

    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 patc

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.