CVE-2006-5461 Missing authorization in n/a

What is CVE-2006-5461?

CVE-2006-5461 is a low-severity missing authorization vulnerability in n/a, published on 14 Nov 2006. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Avahi before 0.6.15 does not verify the sender identity of netlink messages to ensure that they come from the kernel instead of another process, which allows local users to spoof network changes to Avahi.

Which versions are affected by CVE-2006-5461?

It affects 1 product.

Products include Avahi Avahi.

How do I fix CVE-2006-5461?

Upgrade to a fixed version.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2006-5461 being exploited?

There is no known exploitation of CVE-2006-5461 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2017-6519 Denial of service in n/a Critical 9.1
• CVE-2021-26720 Path traversal in n/a High 7.8
• CVE-2026-24401 Avahi has Uncontrolled Recursion in lookup_handle_cname function Medium 6.5
• CVE-2025-68468 Avahi has a reachable assertion in lookup_multicast_callback Medium 6.5
• CVE-2025-68471 Avahi has a reachable assertion in lookup_start Medium 6.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2006-5461, GHSA-4w5j-fgfj-644h.