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 2 unsolicited announcements with CNAME resource records 2 seconds apart.

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0422-1 advisory.

    - CVE-2025-68276: avahi: reachable assertion in `avahi_wide_area_scan_cache` can lead to crash of avahi-     daemon (bsc#1256498).
    - CVE-2025-68468: avahi: reachable assertion in `lookup_multicast_callback` can lead to crash of avahi-     daemon (bsc#1256499).
    - CVE-2025-68471: avahi: reachable assertion in `lookup_start` can lead to crash of avahi-daemon     (bsc#1256500).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:20145-1 advisory.

    - CVE-2025-68276: Fixed refuse to create wide-area record browsers when       wide-area is off (bsc#1256498)
    - CVE-2025-68471: Fixed DoS bug by changing assert to return (bsc#1256500)
    - CVE-2025-68468: Fixed DoS bug by removing incorrect assertion (bsc#1256499)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20110-1 advisory.

    - CVE-2025-68276: Fixed refuse to create wide-area record browsers when       wide-area is off (bsc#1256498)
    - CVE-2025-68471: Fixed DoS bug by changing assert to return (bsc#1256500)
    - CVE-2025-68468: Fixed DoS bug by removing incorrect assertion (bsc#1256499)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0259-1 advisory.

    - CVE-2025-68276: Fixed refuse to create wide-area record browsers when       wide-area is off (bsc#1256498)
    - CVE-2025-68471: Fixed DoS bug by changing assert to return (bsc#1256500)
    - CVE-2025-68468: Fixed DoS bug by removing incorrect assertion (bsc#1256499)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7967-1 advisory.

    It was discovered that Avahi incorrectly terminated when processing browser records with wide-area     disabled. An attacker could possibly use this issue to cause Avahi to crash, resulting in a denial of     service. (CVE-2025-68276)

    It was discovered that Avahi incorrectly terminated when processing unsolicited CNAME records pointing to     resource records with short TTLs. An attacker could possibly use this issue to cause Avahi to crash,     resulting in a denial of service. (CVE-2025-68468)

    It was discovered that Avahi incorrectly terminated when processing unsolicited CNAME records in quick     succession. An attacker could possibly use this issue to cause Avahi to crash, resulting in a denial of     service. (CVE-2025-68471)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 2 unsolicited announcements with     CNAME resource records 2 seconds apart. (CVE-2025-68471)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
298741	SUSE SLES12 Security Update : avahi (SUSE-SU-2026:0422-1)	Nessus	SuSE Local Security Checks	medium
297091	SUSE SLES16 Security Update : avahi (SUSE-SU-2026:20145-1)	Nessus	SuSE Local Security Checks	medium
296995	openSUSE 16 Security Update : avahi (openSUSE-SU-2026:20110-1)	Nessus	SuSE Local Security Checks	medium
296424	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : avahi (SUSE-SU-2026:0259-1)	Nessus	SuSE Local Security Checks	medium
294829	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : Avahi vulnerabilities (USN-7967-1)	Nessus	Ubuntu Local Security Checks	medium
282615	Linux Distros Unpatched Vulnerability : CVE-2025-68471	Nessus	Misc.	medium

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