Description
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.
Published: 2026-03-27
Score: 5.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Arbitrary code execution
Action: Apply Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 07 Apr 2026 21:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Mon, 30 Mar 2026 07:15:00 +0000

Type Values Removed Values Added
First Time appeared Fleetdm
Fleetdm fleet
Vendors & Products Fleetdm
Fleetdm fleet

Sat, 28 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 27 Mar 2026 18:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Fleet vulnerable to OS command injection via crafted software package metadata in uninstall scripts
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-27T19:31:54.764Z

Reserved: 2026-03-27T13:45:29.619Z

Link: CVE-2026-34387

cve-icon Vulnrichment

Updated: 2026-03-27T19:31:51.060Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-27T19:16:43.590

Modified: 2026-04-07T21:15:54.230

Link: CVE-2026-34387

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-08T20:01:08Z

Weaknesses