Secure Boot certificates from 2011 expired on June 24, 2026; more will expire in October – updates to 2023 certificates fail on some devices, and Microsoft now provides error documentation.
Secure Boot certificates will expire on 24 June 2026 for Windows and Linux systems with Secure Boot enabled, requiring administrators to plan timely rollout of new certificates.
Two Notepad++ vulnerabilities enable code execution through XML manipulation; they were patched in version 8.9.6.1, but attackers must already have access to the user directory.
