Avahi up to 0.9-rc2 mDNS/DNS-SD assertion

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Avahi up to 0.9-rc2. The affected element is an unknown function of the component mDNS/DNS-SD. This manipulation causes assertion. The identification of this vulnerability is CVE-2025-68468. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Avahi up to 0.9-rc2. Affected by this vulnerability is some unknown functionality of the component mDNS/DNS-SD. The manipulation with an unknown input leads to a assertion vulnerability. The CWE definition for the vulnerability is CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. As an impact it is known to affect availability. The summary by CVE is:

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-68468 since 12/18/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 282613 (Linux Distros Unpatched Vulnerability : CVE-2025-68468), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (282613), EUVD (EUVD-2025-206279) and CERT Bund (WID-SEC-2026-0066). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Ubuntu Linux
  • SUSE Linux
  • SUSE openSUSE
  • Open Source avahi

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Assertion
CWE: CWE-617
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 282613
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-68468

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/18/2025 CVE reserved
01/12/2026 +25 days Advisory disclosed
01/12/2026 +0 days VulDB entry created
01/24/2026 +12 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-68468 (🔒)
GCVE (CVE): GCVE-0-2025-68468
GCVE (VulDB): GCVE-100-340489
EUVD: 🔒
CERT Bund: WID-SEC-2026-0066 - avahi-daemon: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 01/12/2026 19:08
Updated: 01/24/2026 09:06
Changes: 01/12/2026 19:08 (60), 01/13/2026 18:41 (1), 01/14/2026 00:44 (7), 01/14/2026 02:49 (2), 01/24/2026 09:06 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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