Microsoft Excel 製品 C2R のセキュリティ更新プログラム (2026 年 6 月)

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バージョン 1.4 Aug 25, 2026, 3:54 PM CVSS metrics ("CVSSv2 score" set to 5.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N") CVSSv2 score source (changed from "CVE-2026-44822" to "CVE-2026-45455") CVSSv2 severity (based on CVE-2026-45455, severity decreased from "High" to "Medium") CVSSv3 score source (changed from "CVE-2026-45455" to none) Plugin Feed: 202608251554
バージョン 1.3 Jun 22, 2026, 8:21 AM CVSS metrics ("CVSSv3 score" set to 4.3) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N") CVSSv3 score source (set to "CVE-2026-45455") CVSSv3 severity (based on CVE-2026-45455, severity decreased from "High" to "Medium") Plugin Feed: 202606220821
バージョン 1.2 Jun 15, 2026, 6:51 AM CVSSv3 score source (changed from "CVE-2026-44822" to none) Plugin Feed: 202606150651
バージョン 1.1 Jun 13, 2026, 2:05 AM New Plugin Feed: 202606130205

* Changelogs are generally available for changes made after Nov 1, 2022