CVE-2026-45585
Medium · 6.8CVSS
6.8
EPSS
0.5%
Published
May 20, 2026
CISA due date
—
The record
Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as "YellowKey". The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices. We are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until the security update is made available.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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