CVE intelligence

CVE-2026-40225

Vulnerability intelligence

Published Apr 10, 2026Sources checked Nov 11, 2026

6.4MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-40225 and is rated Medium severity with a CVSS score of 6.4. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Sep 25, 2026

CBL-Mariner Releases Release Notes

Vendor-listed releases

255-28
255-30

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-40225?

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.

Source: NVD