CVE-2026-34387CRITICAL 9.8EPSS p66.3%

CVE-2026-34387CVE-2026-34387

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS1.28% probability of exploitation · percentile 66.3% · 2026-06-19T12:03:05Z
Published2026-03-27
Last modified2026-04-07

Underlying weaknesses· 1

CWE-78

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.