CVE-2026-93006

MediumCVSS 6.8

Published: 29/10/2026(UTC)Updated: 02/11/2026(UTC)Translated: 29/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.30%

23th percentile - higher than 23% of all known CVEs

Summary

The TFTP server in dnsmasq 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 able to 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.

Risk Assessment

In local networks using PXE, an attacker may cause a victim to boot malicious content.

Recommendation

Update dnsmasq to a patched version; if TFTP is not needed, disable the service.

Other vulnerabilities in dnsmasq

See all

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS