Home

Description

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

PUBLISHED Reserved 2025-11-19 | Published 2026-04-14 | Updated 2026-06-01 | Assigner microsoft




MEDIUM: 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-807: Reliance on Untrusted Inputs in a Security Decision

Product status

10.0.14393.0 (custom) before 10.0.14393.9060
affected

10.0.17763.0 (custom) before 10.0.17763.8644
affected

10.0.19044.0 (custom) before 10.0.19044.7184
affected

10.0.19045.0 (custom) before 10.0.19045.7184
affected

10.0.14393.0 (custom) before 10.0.14393.9060
affected

10.0.14393.0 (custom) before 10.0.14393.9060
affected

10.0.17763.0 (custom) before 10.0.17763.8644
affected

10.0.17763.0 (custom) before 10.0.17763.8644
affected

10.0.20348.0 (custom) before 10.0.20348.5020
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0390 (UEFI Secure Boot Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-0390)

nvd.nist.gov (CVE-2026-0390)

Download JSON