Secuno
ENNL
Book demo

CVE-2026-34387

Fleetdm Fleet command injection

9.8 CRITICALEPSS 1.85%
  1. Published27 Mar 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Fleetdm Fleet< 4.81.1

Remediation

Fixed in
Fleetdm Fleet≥ 4.81.1

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-10911010.0
A flaw has been found in Wavlink WL-WN592AX6 250422. This issue affects the function…
CVE-2026-1091089.9
A security vulnerability has been detected in Wavlink WL-WN530BE1-A 251117. This…
CVE-2026-820968.8
IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker…
CVE-2026-185298.7
IBM Maximo Application Suite - Location Service for Esri Component 9.2, 9.1, and 9.0 is…
CVE-2025-714299.8
GPT-SoVITS through 20250606v2pro contains an OS command injection vulnerability in…
CVE-2020-372798.1
easy-pdf-merge 0.1.0 through 0.2.6 contains an OS command injection vulnerability that…

Frequently asked

Is CVE-2026-34387 being actively exploited?

CVE-2026-34387 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.85%.

How severe is CVE-2026-34387?

CVE-2026-34387 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.85% probability of exploitation.

Which products are affected by CVE-2026-34387?

Affected products include Fleetdm Fleet.

How do I fix CVE-2026-34387?

Upgrade affected software to a fixed version, for example Fleetdm Fleet 4.81.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-34387 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.