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, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006159 advisory.

    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, an unprivileged local users can crash avahi-daemon (with wide-area     disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be     done by either calling     the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create     those browsers internally themselves.

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

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

According to the versions of the avahi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    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, an unprivileged local users can crash avahi-daemon (with wide-area     disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be     done by either calling the RecordBrowserNew method directly or creating hostname/address/service     resolvers/browsers that create those browsers internally themselves.(CVE-2025-68276)

    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)

    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.(CVE-2025-68468)

Tenable has extracted the preceding description block directly from the EulerOS avahi 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 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, an unprivileged local users can crash avahi-daemon (with wide-area     disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be     done by either calling the RecordBrowserNew method directly or creating hostname/address/service     resolvers/browsers that create those browsers internally themselves. (CVE-2025-68276)

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

ID	Name	Product	Family	Severity
302276	Unity Linux 20.1070e Security Update: avahi (UTSA-2026-006159)	Nessus	Unity Linux Local Security Checks	medium
301625	EulerOS 2.0 SP13 : avahi (EulerOS-SA-2026-1229)	Nessus	Huawei Local Security Checks	medium
301572	EulerOS 2.0 SP13 : avahi (EulerOS-SA-2026-1265)	Nessus	Huawei Local Security Checks	medium
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
282612	Linux Distros Unpatched Vulnerability : CVE-2025-68276	Nessus	Misc.	medium

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