パッチ火曜日、2026年4月版
マイクロソフトはWindows OSと関連ソフトウェアの167件のセキュリティ脆弱性を修正するアップデートを公開。SharePoint ServerのゼロデイやWindows Defenderの「BlueHammer」と呼ばれる公開された脆弱性を含む。Google Chromeは2026年4回目のゼロデイを修正し、Adobe Readerはリモートコード実行につながる悪用中の脆弱性を緊急修正。
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