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May 12, 2026—KB5087544 (OS Builds 19045.7291 and 19044.7291)

🗓️ 12 May 2026 14:00:00Reported by MicrosoftType 
mskb
 mskb
🔗 support.microsoft.com👁 28 Views

KB5087544 updates Windows 10 22H2/21H2; Secure Boot certificates expire in June 2026; follow guidance to update certificates.

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12 May 2026 14:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 47.3
CVSS 3.17 - 8.8
EPSS0.02117
SSVC
28