CVE-2026-34387: Fleetdm Fleet

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. 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.