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.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:2297-1 advisory.

    This update for avahi fixes the following issue:

    - CVE-2026-34933: 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 (bsc#1261546).

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the SUSE- SU-2026:2296-1 advisory.

    This update for avahi fixes the following issue:

    - CVE-2026-34933: reachable assertion in `transport_flags_from_domain` can crash the `avahi-daemon`     (bsc#1261546).

Tenable has extracted the preceding description block directly from the SUSE 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 packages installed, the EulerOS Virtualization 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. 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.(CVE-2026-34933)

    Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol     suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an     unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to     the same domain (e.g., 'h.local' as a CNAME for 'h.local'). This causes unbounded recursion in the     lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where     AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by     nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.(CVE-2026-24401)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization 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.

According to the versions of the avahi packages 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. 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.(CVE-2026-34933)

    Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol     suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an     unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to     the same domain (e.g., 'h.local' as a CNAME for 'h.local'). This causes unbounded recursion in the     lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where     AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by     nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.(CVE-2026-24401)

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 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. 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.
    (CVE-2026-34933)

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

ID	Name	Product	Family	Severity
321059	SUSE SLED15 / SLES15 Security Update : avahi (SUSE-SU-2026:2297-1)	Nessus	SuSE Local Security Checks	medium
321024	SUSE SLES12 Security Update : avahi (SUSE-SU-2026:2296-1)	Nessus	SuSE Local Security Checks	medium
320713	EulerOS Virtualization 2.13.0 : avahi (EulerOS-SA-2026-2394)	Nessus	Huawei Local Security Checks	medium
320696	EulerOS Virtualization 2.13.1 : avahi (EulerOS-SA-2026-2365)	Nessus	Huawei Local Security Checks	medium
320283	EulerOS 2.0 SP13 : avahi (EulerOS-SA-2026-2278)	Nessus	Huawei Local Security Checks	medium
320233	EulerOS 2.0 SP13 : avahi (EulerOS-SA-2026-2321)	Nessus	Huawei Local Security Checks	medium
305007	Linux Distros Unpatched Vulnerability : CVE-2026-34933	Nessus	Misc.	medium

Detections

Analytics

CVE-2026-34933

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium