EUVD-2026-31006
GHSA-2h24-8rjh-qgjv
CVSS VectorNVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
Windows security feature bypass, publicly dubbed 'YellowKey', exposes systems to full confidentiality, integrity, and availability compromise via command injection (CWE-77) requiring only physical access - no credentials or user interaction needed. A proof-of-concept was released publicly prior to patch availability, violating coordinated disclosure norms, which lowers the attacker skill bar significantly. …
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