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.

CVSS 3.1

6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-25)

CWE

CWE-807

Published

2026-04-14

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• microsoft:windows_10_1607
• microsoft:windows_10_1809
• microsoft:windows_10_21h2
• microsoft:windows_10_22h2
• microsoft:windows_server_2016
• microsoft:windows_server_2019
• microsoft:windows_server_2022

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0390

Check your stackJSON