Is CVE-2026-34933 in the CISA KEV catalog?

No. CVE-2026-34933 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34933?

CVE-2026-34933 has a CVSS v3 base score of 5.5 (Moderate).

What is the EPSS score for CVE-2026-34933?

CVE-2026-34933 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34933?

Upgrade avahi on rhel 8 to main@aarch64 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2026-34933

MEDIUM

5.5

CVSS v3

NVD

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.

CWE-617

How to fix

Remediation Available

avahiRed Hat / RHEL

Fixed in:main@aarch64RHSA-2026:11316

Fixed in:main@srcRHSA-2026:11316

Fixed in:main@x86_64RHSA-2026:11316

avahiRocky

Fixed in:main@aarch64RHSA-2026:11316

Fixed in:main@srcRHSA-2026:11316

Fixed in:main@x86_64RHSA-2026:11316

avahiUbuntu

Fixed in:0.6.31-4ubuntu1.3+esm5USN-8269-1

Fixed in:0.6.32~rc+dfsg-1ubuntu2.3+esm5USN-8269-1

Fixed in:0.7-3.1ubuntu1.3+esm4USN-8269-1

Fixed in:0.7-4ubuntu7.3+esm2USN-8269-1

Fixed in:0.8-5ubuntu5.5USN-8269-1

Fixed in:0.8-13ubuntu6.2USN-8269-1

Fixed in:0.8-16ubuntu3.2USN-8269-1

avahi-daemonUbuntu

Fixed in:0.6.31-4ubuntu1.3+esm5USN-8269-1

Fixed in:0.6.32~rc+dfsg-1ubuntu2.3+esm5USN-8269-1

Fixed in:0.7-3.1ubuntu1.3+esm4USN-8269-1

Fixed in:0.7-4ubuntu7.3+esm2USN-8269-1

Fixed in:0.8-5ubuntu5.5USN-8269-1

Fixed in:0.8-13ubuntu6.2USN-8269-1

Fixed in:0.8-16ubuntu3.2USN-8269-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Patch3

Exploit1

openwall.com

Related Vulnerabilities

Other CWE-617 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-8617	High	7.5	93%	-	Fix
CVE-2020-36222	High	7.5	78%	-	Fix
CVE-2006-5779	High	7.5	75%	-	Fix
CVE-2021-27212	High	7.5	64%	-	Fix
CVE-2018-5740	High	7.5	59%	-	Fix
CVE-2023-28425	Medium	5.5	55%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-13.