Windows 11 25H2 26200.9457 重要
Windows UMPS の権限昇格脆弱性(CVE-2026-62721)を修正。RDS 不安定化、Hyper-V 共有フォルダアクセス不可、USB オーディオの多チャネル対応の問題も解決します。ただしドメイン信頼関係の喪失という既知の問題があり、回避策が必要です。
This out-of-band (OOB) update for Windows 11, version 25H2 and Windows 11, version 24H2 (KB5129195) is cumulative. It includes updates from previous releases, along with additional security and non-security improvements. Visit the Windows release health dashboard for the latest status on this release. Improvements This OOB update includes the following improvement: [Security] This update includes protections documented in CVE-2026-62721, which refers to a Windows User-Mode Power Service (UMPS) E…support.microsoft.com
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