CVE-2026-93006
Dnsmasq: dnsmasq: tftp prefetch cache keyed on stale heap pointer serves wrong file content
MEDIUM 6.8
At a glance
- Source
- CVE.org
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
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.
Weaknesses (CWE)
- CWE-672 — Operation on a Resource after Expiration or Release
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | redhat |
European references
- ENISA EUVD · EUVD-2026-112791
- GCVE · GCVE-0-2026-93006
Affected products
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |