CVE-2026-93006 Dnsmasq: dnsmasq: tftp prefetch cache keyed on stale heap pointer serves wrong file content
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-93006?
CVE-2026-93006 is a medium-severity vulnerability in Red Hat Ceph Storage 9, published on 29 Oct 2026.
Official description
A flaw was found in dnsmasq. The TFTP server can serve the wrong file contents because a recently used transfer cache is not invalidated when a transfer finishes. An attacker on the local network who can request a TFTP file may cause a later client to receive previously cached data instead of the requested file. In PXE network-boot environments this can substitute attacker-chosen boot content for a victim machine.
Weakness: CWE-672
Which versions are affected by CVE-2026-93006?
How do I fix CVE-2026-93006?
No fix has been published for CVE-2026-93006 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-93006 being exploited?
There is no known exploitation of CVE-2026-93006 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-93006, GHSA-fp59-6rfj-9jgw.