{"id":2788021,"date":"2026-03-12T01:05:27","date_gmt":"2026-03-12T01:05:27","guid":{"rendered":"https:\/\/www.wacoca.com\/news\/2788021\/"},"modified":"2026-03-12T01:05:27","modified_gmt":"2026-03-12T01:05:27","slug":"microsoft-2026%e5%b9%b43%e6%9c%88%e3%81%ae%e5%ae%9a%e4%be%8b%e3%83%91%e3%83%83%e3%83%81%e3%81%a7-%e5%85%ac%e9%96%8b%e6%b8%88%e3%81%bf%e3%82%bc%e3%83%ad%e3%83%87%e3%82%a42%e4%bb%b6%e3%81%a8office","status":"publish","type":"post","link":"https:\/\/www.wacoca.com\/news\/2788021\/","title":{"rendered":"Microsoft 2026\u5e743\u6708\u306e\u5b9a\u4f8b\u30d1\u30c3\u30c1\u3067-\u516c\u958b\u6e08\u307f\u30bc\u30ed\u30c7\u30a42\u4ef6\u3068Office\u30fbExcel\u306e\u8106\u5f31\u6027\u304c\u4fee\u6b63(CVE-2026-21262,CVE-2026-26127)|\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30cb\u30e5\u30fc\u30b9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56Lab"},"content":{"rendered":"

\"Microsoft <\/p>\n

Microsoft\u306f2026\u5e743\u670810\u65e5\u30012026\u5e743\u6708\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002Japan Security Team\u306e\u516c\u5f0f\u30d6\u30ed\u30b0\u3067\u306f\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u88fd\u54c1\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3067\u304d\u308b\u3060\u3051\u65e9\u671f\u306b\u66f4\u65b0\u3092\u9069\u7528\u3059\u308b\u3088\u3046\u547c\u3073\u304b\u3051\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306e\u516c\u5f0f\u30ea\u30ea\u30fc\u30b9\u3067\u7279\u306b\u5f37\u8abf\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u66f4\u65b0\u516c\u958b\u524d\u306b\u8a73\u7d30\u304c\u4e00\u822c\u516c\u958b\u3055\u308c\u3066\u3044\u305f2\u4ef6\u306e\u8106\u5f31\u6027\u3067\u3001CVE-2026-26127 .NET\u306e\u30b5\u30fc\u30d3\u30b9\u62d2\u5426\u306e\u8106\u5f31\u6027\u3068\u3001CVE-2026-21262 SQL Server\u306e\u7279\u6a29\u306e\u6607\u683c\u306e\u8106\u5f31\u6027\u3067\u3059\u3002<\/p>\n

\u516c\u958b\u6e08\u307f\u30bc\u30ed\u30c7\u30a4\u306e1\u4ef6\u76ee\u306fSQL Server<\/p>\n

CVE-2026-21262\u306fSQL Server\u306e\u7279\u6a29\u306e\u6607\u683c\u306e\u8106\u5f31\u6027\u3067\u3059\u3002Microsoft\u306eSQL Server 2022\u5411\u3051\u66f4\u65b0KB5077465\u3067\u306f\u3001\u3053\u306e\u8106\u5f31\u6027\u304c3\u670810\u65e5\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u3068\u660e\u8a18\u3055\u308c\u3066\u304a\u308a\u3001\u66f4\u65b0\u5f8c\u306eSQL Server 2022 GDR\u30d3\u30eb\u30c9\u306f16.0.1170.5\u3067\u3059\u3002SQL Server 2025\u5411\u3051\u306eKB5077466\u3067\u3082\u540c\u8106\u5f31\u6027\u304c\u4fee\u6b63\u5bfe\u8c61\u306b\u542b\u307e\u308c\u3066\u304a\u308a\u3001\u66f4\u65b0\u5f8c\u30d3\u30eb\u30c9\u306f17.0.4020.2\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002SQL Server\u3092\u696d\u52d9\u57fa\u76e4\u306b\u4f7f\u3063\u3066\u3044\u308b\u7d44\u7e54\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u66f4\u65b0\u78ba\u8a8d\u3092\u512a\u5148\u3059\u3079\u304d\u3067\u3059\u3002 <\/p>\n

\u3082\u30461\u4ef6\u306e\u516c\u958b\u6e08\u307f\u30bc\u30ed\u30c7\u30a4\u306f.NET<\/p>\n

CVE-2026-26127\u306f.NET\u306e\u30b5\u30fc\u30d3\u30b9\u62d2\u5426\u306e\u8106\u5f31\u6027\u3067\u3059\u3002.NET\u516c\u5f0f\u30a2\u30c9\u30d0\u30a4\u30b6\u30ea\u3067\u306f\u3001\u4e0d\u6b63\u306aBase64Url\u5165\u529b\u306e\u30c7\u30b3\u30fc\u30c9\u6642\u306b\u767a\u751f\u3059\u308bout-of-bounds read\u304c\u539f\u56e0\u3068\u8aac\u660e\u3055\u308c\u3066\u304a\u308a\u3001CVSS v3.1\u306f7.5\u3001\u6df1\u523b\u5ea6\u306fHigh\u3067\u3059\u3002\u5f71\u97ff\u306f.NET 9.0\u3001.NET 10.0\u3001\u304a\u3088\u3073Microsoft.Bcl.Memory\u306b\u53ca\u3073\u3001\u4fee\u6b63\u7248\u306f.NET 9\u7cfb\u304c9.0.14\u3001.NET 10\u7cfb\u304c10.0.4\u3067\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3084\u793e\u5185\u30b5\u30fc\u30d3\u30b9\u3067.NET\u30e9\u30f3\u30bf\u30a4\u30e0\u3084\u95a2\u9023\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3001OS\u66f4\u65b0\u3060\u3051\u3067\u306a\u304f\u30e9\u30f3\u30bf\u30a4\u30e0\u3068\u4f9d\u5b58\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u4e21\u65b9\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

Office\u306e\u8106\u5f31\u6027<\/p>\n

Microsoft\u306e2026\u5e743\u6708\u6708\u4f8b\u30ea\u30ea\u30fc\u30b9\u3067\u306f\u3001Microsoft Office\u306f\u88fd\u54c1\u30d5\u30a1\u30df\u30ea\u5225\u4e00\u89a7\u3067\u6700\u5927\u6df1\u523b\u5ea6\u304c\u7dca\u6025\u3001\u6700\u3082\u5927\u304d\u306a\u5f71\u97ff\u304c\u30ea\u30e2\u30fc\u30c8\u3067\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u304c\u53ef\u80fd\u3068\u6574\u7406\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001SharePoint\u5411\u3051\u306e\u516c\u5f0f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u8aac\u660e\u3067\u306f\u3001\u4eca\u56de\u306e\u66f4\u65b0\u304cMicrosoft Office\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u6027\u3092\u89e3\u6c7a\u3059\u308b\u3068\u660e\u8a18\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5bfe\u8c61\u3068\u3057\u3066\u6848\u5185\u3055\u308c\u3066\u3044\u308b\u306e\u306fCVE-2026-26113\u3067\u3059\u3002 <\/p>\n

CVE-2026-26113\u306e\u6982\u8981\u306f\u3001Microsoft Office\u306b\u304a\u3051\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u6027\u3067\u3059\u3002CVE\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u4fe1\u983c\u3067\u304d\u306a\u3044\u30dd\u30a4\u30f3\u30bf\u30fc\u306e\u9006\u53c2\u7167\u306b\u3088\u308a\u3001\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u653b\u6483\u8005\u304c\u30ed\u30fc\u30ab\u30eb\u3067\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308b\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002Microsoft\u516c\u5f0f\u6708\u4f8b\u30ea\u30ea\u30fc\u30b9\u3067\u3082Office\u306f\u7dca\u6025\u6271\u3044\u3067\u3042\u308a\u3001\u4e00\u822c\u5229\u7528\u7aef\u672b\u3067\u3042\u3063\u3066\u3082\u512a\u5148\u7684\u306b\u66f4\u65b0\u3059\u3079\u304d\u5bfe\u8c61\u3067\u3059\u3002 <\/p>\n

SharePoint\u306e\u8106\u5f31\u6027<\/p>\n

Microsoft SharePoint\u3082\u3001\u516c\u5f0f\u30ea\u30ea\u30fc\u30b9\u3067\u306f\u6700\u5927\u6df1\u523b\u5ea6\u304c\u7dca\u6025\u3001\u6700\u3082\u5927\u304d\u306a\u5f71\u97ff\u304c\u30ea\u30e2\u30fc\u30c8\u3067\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u304c\u53ef\u80fd\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002SharePoint Server 2016\u304a\u3088\u30732019\u5411\u3051\u306e\u516c\u5f0f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u8aac\u660e\u3067\u306f\u3001\u4eca\u56de\u306e\u66f4\u65b0\u304cSharePoint Server\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u60272\u4ef6\u3068\u3001\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306e\u8106\u5f31\u60271\u4ef6\u3092\u89e3\u6c7a\u3059\u308b\u3068\u6848\u5185\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5bfe\u8c61CVE\u306fCVE-2026-26114\u3001CVE-2026-26106\u3001CVE-2026-26105\u3067\u3059\u3002 <\/p>\n

CVE-2026-26114\u306f\u3001Microsoft Office SharePoint\u306b\u304a\u3051\u308b\u4fe1\u983c\u3067\u304d\u306a\u3044\u30c7\u30fc\u30bf\u306e\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u306b\u8d77\u56e0\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u6027\u3067\u3059\u3002CVE\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u8a8d\u8a3c\u3055\u308c\u305f\u653b\u6483\u8005\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u3067\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308b\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n

CVE-2026-26106\u306f\u3001Microsoft Office SharePoint\u306b\u304a\u3051\u308b\u4e0d\u9069\u5207\u306a\u5165\u529b\u691c\u8a3c\u306b\u8d77\u56e0\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u6027\u3067\u3059\u3002\u3053\u3061\u3089\u3082CVE\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u8a8d\u8a3c\u3055\u308c\u305f\u653b\u6483\u8005\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u3067\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308b\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n

CVE-2026-26105\u306f\u3001Microsoft SharePoint Server\u306e\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306e\u8106\u5f31\u6027\u3067\u3059\u3002SharePoint\u5411\u3051\u516c\u5f0f\u66f4\u65b0\u8aac\u660e\u3067\u306f\u3001RCE 2\u4ef6\u3068\u3042\u308f\u305b\u3066\u3053\u306e\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u8106\u5f31\u6027\u3082\u89e3\u6c7a\u5bfe\u8c61\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u60c5\u30b7\u30b9\u90e8\u9580\u304c\u512a\u5148\u3059\u3079\u304d\u5bfe\u5fdc<\/p>\n

\u4eca\u56de\u306e\u516c\u5f0f\u30ea\u30ea\u30fc\u30b9\u3092\u57fa\u6e96\u306b\u512a\u5148\u9806\u4f4d\u3092\u4ed8\u3051\u308b\u306a\u3089\u3001\u307e\u305a\u516c\u958b\u6e08\u307f\u30bc\u30ed\u30c7\u30a4\u306e\u5bfe\u8c61\u3067\u3042\u308bSQL Server\u3068.NET\u3092\u6700\u512a\u5148\u306b\u78ba\u8a8d\u3059\u3079\u304d\u3067\u3059\u3002\u305d\u306e\u3046\u3048\u3067\u3001Microsoft\u304c\u7dca\u6025\u3068\u4f4d\u7f6e\u4ed8\u3051\u3066\u3044\u308bOffice\u3068SharePoint\u306e\u66f4\u65b0\u3092\u901f\u3084\u304b\u306b\u9069\u7528\u3059\u308b\u6d41\u308c\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002<\/p>\n

\u3053\u306e\u8a18\u4e8b\u3092\u30b7\u30a7\u30a2\u3059\u308b<\/p>\n

\u30e1\u30fc\u30eb\u30de\u30ac\u30b8\u30f3<\/p>\n

\u6700\u65b0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u60c5\u5831\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n

\u6295\u7a3f\u8005\uff1a\u4e09\u6751 <\/p>\n

<\/p>\n

\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56Lab\u306e\u30c0\u30fc\u30af\u30a6\u30a7\u30d6\u306e\u8abf\u67fb\u304b\u3089\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30cb\u30e5\u30fc\u30b9\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u57f7\u7b46\u307e\u3067\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002
\n
\n\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88fd\u54c1\u3092\u8ca9\u58f2\u3059\u308b\u4e0a\u5834\u4f01\u696d\u3067SOC(\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u30bb\u30f3\u30bf\u30fc)\u3084Web\u30b5\u30a4\u30c8\u3084\u30a2\u30d7\u30ea\u306e\u8106\u5f31\u6027\u8a3a\u65ad \u55b6\u696d8\u5e74\u3001\u305d\u306e\u5f8c\u4e00\u5ff5\u767a\u8d77\u3057\u30b7\u30b9\u30c6\u30e0\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u8ee2\u8077\u3002MDM\u3084\u4eba\u4e8b\u7cfb\u306eSaaS\u958b\u767a\u3092\u884c\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Microsoft\u306f2026\u5e743\u670810\u65e5\u30012026\u5e743\u6708\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u516c\u958b\u3057\u307e\u3057\u305f\u3002Japan Security Team\u306e\u516c\u5f0f\u30d6\u30ed\u30b0\u3067\u306f\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u88fd\u54c1\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3067\u304d\u308b\u3060\u3051\u65e9\u671f\u306b\u66f4\u65b0\u3092\u9069\u7528\u3059<\/p>\n","protected":false},"author":2,"featured_media":2788022,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[762827],"tags":[762834,762833,521918,162246,2662,762832],"class_list":{"0":"post-2788021","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-science-technology","8":"tag-science-technology","9":"tag-science-news","10":"tag-technology-news","11":"tag-162246","12":"tag-2662","13":"tag-762832"},"share_on_mastodon":{"url":"https:\/\/wakoka.com\/@news\/116213522725962765","error":""},"_links":{"self":[{"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/posts\/2788021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/comments?post=2788021"}],"version-history":[{"count":0,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/posts\/2788021\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/media\/2788022"}],"wp:attachment":[{"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/media?parent=2788021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/categories?post=2788021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/tags?post=2788021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}