CVE-2026-34388

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/27/2026

Last Modified4/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

fleetdm:fleet

Weaknesses (CWE)

CWE-703

References

https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv(security-advisories@github.com)

IOC Correlations

No correlations recorded

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