Is CVE-2026-34387 actively exploited?

No active exploitation of CVE-2026-34387 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34387 be exploited remotely?

Yes. CVE-2026-34387 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34387?

CVE-2026-34387 has a CVSS score of 5.7 (MEDIUM).

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MEDIUM

CVE-2026-34387

CWE-78Published: March 27, 2026· Updated: Mar 30, 2026

5.7

CVSS v3.1

EPSS:0.26%probability of exploitation in 30 daysPercentile:49.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34387 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.High

User InteractionA

ScopeX

Impact

Confidentiality

Integrity

Availability

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X