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December 9, 2025—KB5071505 (Monthly Rollup)

🗓️ 09 Dec 2025 08:00:00Reported by MicrosoftType 
mskb
 mskb🔗 support.microsoft.com👁 13 Views

December 9, 2025 Rollup for Windows Server 2012; ESU install may fail on Azure Arc; Secure Boot certs expire 2026.

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GithubExploit		Exploit for CVE-2025-54100
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BDU FSTEC		The vulnerability of the CSC (Client-Side Caching) service in Windows operating systems allows attackers to enhance their privileges.
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BDU FSTEC		The vulnerability of the Remote Access Connection Manager (RASMan) service in Windows operating systems allows a hacker to increase their privileges.
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BDU FSTEC		The vulnerability of the Routing and Remote Access Service (RRAS) in Windows operating systems allows attackers to enhance their privileges.
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09 Dec 2025 08:00Current
7.7High risk
Vulners AI Score7.7
CVSS 3.18.8
EPSS0.02075
SSVC
Monthly RollupWindows Server 2012Azure ArcSecure BootCertificate expirationEnd of supportUpgrade recommendation
13