CVE-2026-34391
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability6. percentile0.2%
ProductFleet
PublishedMar 27, 2026
First seenMar 27, 2026
Weakness typeCWE-488CWE-488
How to fix
Update
- fleetdm fleet4.81.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fleetdm fleet | v < 4.81.1 | 4.81.1 |
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