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VULNERABILITIES

CVE-2026-34388 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-703Improper Check or Handling of Exceptional Conditions[email protected]

Affected Products

ProductVersions
fleetdm fleet
< 4.81.0

CPE

  • cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-34388
NVD Published Date:
Mar 27, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-34388 Details - Not Deferred