CVE-2026-34387
March 27, 2026
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.
Affected Packages
github.com/fleetdm/fleet (GO):
Affected version(s) >=v0.0.0-20160728223426-91e78d276f8e <v4.81.1Fix Suggestion:
Update to version v4.81.1github.com/fleetdm/fleet (GO):
Affected version(s) >=v0.0.0-20160728223426-91e78d276f8e <v4.81.1Fix Suggestion:
Update to version v4.81.1github.com/fleetdm/fleet (GO):
Affected version(s) >=v0.0.0-20160728223426-91e78d276f8e <v4.81.1Fix Suggestion:
Update to version v4.81.1Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
ACTIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
UNREPORTED
CVSS v3
Base Score:
6.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
EPSS
Base Score:
0.26
