What is CVE-2026-34391?

CVE-2026-34391 is a high-severity vulnerability in Fleetdm Fleet, classified under CWE-488. CVSS score: 7.5/10. Published 2026-03-27.

How severe is CVE-2026-34391?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Fleetdm Fleet

CVE-2026-34391

Fleet is open source device management software. Prior to 4.81.1, a vulnerability in Fleet's Windows MDM command processing allows a malicious enrolled device to access MDM commands intended for other devices, potentially exposing sensitiv…

EPSS: 0.002 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Fleetdm Fleet — versions < 4.81.1

Weakness classification (CWE)

CWE-488

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-34391?: CVE-2026-34391 is a high-severity vulnerability in Fleetdm Fleet, classified under CWE-488. CVSS score: 7.5/10. Published 2026-03-27.
How severe is CVE-2026-34391?: High severity. CVSS v3 base score is 7.5 out of 10.