CVE-2026-34391: Fleetdm Fleet

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Fleet is open source device management software. Prior to 4.81.1, a vulnerability in Fleet's Windows MDM command processing allows a malicious enrolled device to access MDM commands intended for other devices, potentially exposing sensitive configuration data such as WiFi credentials, VPN secrets, and certificate payloads across the entire Windows fleet. Version 4.81.1 patches the issue.

Affected products

• Fleetdm Fleet: before 4.81.1 (fixed in 4.81.1)

Published 2026-03-27. Last modified 2026-06-17.