wid-sec-w-2026-0902 · Published 2026-03-29 · View on BSI CERT-Bund ↗

Fleet: Multiple Vulnerabilities

CVSS 8.7 HIGH

Risk Summary

Fleet is open source device management software. Prior to 4.81.0, a denial-of-service vulnerability in Fleet's gRPC Launcher endpoint allows an authenticated host to crash the entire Fleet server process by sending an unexpected log type value. The server terminates immediately, disrupting all connected hosts, MDM enrollments, and API consumers. Version 4.81.0 patches the issue.

CVEs (10)

CVE-2026-26186 CVE-2026-34385 CVE-2026-34386 CVE-2026-26061 CVE-2026-34388 CVE-2026-26060 CVE-2026-29180 CVE-2026-34389 CVE-2026-34391 CVE-2026-34387

Affected Vendors

Open Source

Affected Products (2)

Open Source · Fleet <4.81.1

Open Source · Fleet 4.81.1

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