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CVE-2025-68468

23
FAUCET Score

CVE-2025-68468 describes a denial-of-service vulnerability in Avahi versions 0.9-rc2 and earlier, affecting the avahi-daemon component. An attacker can crash the daemon by sending specially crafted unsolicited announcements containing CNAME records that point to resource records with short Time-To-Live (TTL) values. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low attack complexity, leading to high availability impact. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*
0.9CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:0.9:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 26th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (15)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 20861-17086Fixed in: 0.8-5
microsoftpatch availablevia msrc
Product: azl3 avahi 0.8-5 on Azure Linux 3.0Fixed in: 0.8-6
microsoftpatch availablevia msrc
Product: azl3 avahi 0.8-7 on Azure Linux 3.0Fixed in: 0.8-6
microsoftpatch availablevia msrc
Product: azl3 avahi 0.8-6 on Azure Linux 3.0Fixed in: 0.8-6
microsoftpatch availablevia msrc
Product: cbl2 avahi 0.8-5 on CBL Mariner 2.0Fixed in: 0.8-5
microsoftpatch availablevia msrc
Product: 20862-17084Fixed in: 0.8-6
microsoftpatch availablevia msrc
Product: 20826-17084Fixed in: 0.8-6
microsoftpatch availablevia msrc
Product: 17556-17084Fixed in: 0.8-6
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: avahi
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: avahi
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: avahi
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: avahi
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: rhcos
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: avahi

Vendor Advisories (2)

microsoft2026-Jan/CVE-2025-68468Moderate

Avahi has a reachable assertion in lookup_multicast_callback

Jan 13, 2026
redhatCVE-2025-68468Moderate

avahi: Avahi: Denial of Service via crafted mDNS/DNS-SD announcements

Jan 12, 2026

References

github.com / avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a
Patch
github.com / avahi/avahi/issues/683
Issue TrackingPatch
github.com / avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52
Vendor Advisory