CVE-2026-34387

moderate-risk

Published 2026-03-27

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.

Do I need to act?

0.13% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (1)

Fleet

Affected Vendors

Fleetdm

References (1)

Vendor Advisory https://github.com/fleetdm/fleet/security/advisories/GHSA-7rhw-5mpv-gp4h

/ 100

moderate-risk

Severity 32/34 · Critical

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal