CVE intelligence

CVE-2026-0390

Vulnerability intelligence

Published Apr 14, 2026Sources checked Nov 11, 2026

6.7MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-0390 and is rated Medium severity with a CVSS score of 6.7. 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: Apr 14, 2026

Vendor remediation details

Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082198.

Vendor-listed releases

10.0.17763.8644
10.0.20348.5020
10.0.19044.7184
10.0.19045.7184
10.0.14393.9060

CISA KEVNot listedBased on the latest collected catalog

EPSS0.3%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-0390?

Reliance on untrusted inputs in a security decision in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.

Source: NVD