\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u3001Defender\u306e\u60aa\u7528\u3055\u308c\u305f\u30bc\u30ed\u30c7\u30a4RedSun\u3068UnDefend\u3092\u4fee\u6b63\uff08CVE-2026-41091\u3001CVE-2026-45498\uff09<\/p>\n
SecurityWeek \u2013 May 21, 2026<\/p>\n
\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u306fMicrosoft Defender\u306b\u5b58\u5728\u3059\u308b\u8106\u5f31\u60272\u4ef6\u306e\u30d1\u30c3\u30c1\u3092\u516c\u958b\u3057\u3001\u3053\u308c\u3089\u306e\u30d0\u30b0\u304c\u30bc\u30ed\u30c7\u30a4\u3068\u3057\u3066\u5b9f\u969b\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3068\u8b66\u544a\u3057\u305f\u3002\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u306eFabian Bader\u6c0f\u306b\u3088\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u306f\u30014\u6708\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7814\u7a76\u8005\u300cChaotic Eclipse\u300d\u304c\u30ea\u30fc\u30af\u3057\u305f\u8106\u5f31\u6027\u300cRedSun\u300d\u304a\u3088\u3073\u300cUnDefend\u300d\u306b\u8a72\u5f53\u3059\u308b\u3068\u3044\u3046\u3002<\/p>\n
\u00a0<\/p>\n
1\u3064\u76ee\u306e\u8106\u5f31\u6027\u306fCVE-2026-41091\uff08CVSS\u30b9\u30b3\u30a27.8\uff09\u3067\u3001\u653b\u6483\u8005\u306b\u30b7\u30b9\u30c6\u30e0\u6a29\u9650\u3078\u306e\u6607\u683c\u3092\u8a31\u3059\u30ea\u30f3\u30af\u8ffd\u8de1\u306e\u4e0d\u5177\u5408\u3002\u3082\u30461\u3064\u306fCVE-2026-45498\uff08CVSS\u30b9\u30b3\u30a24.0\uff09\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u3061\u3089\u306f\u30b5\u30fc\u30d3\u30b9\u62d2\u5426\uff08DoS\uff09\u653b\u6483\u306e\u8106\u5f31\u6027\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n
\u00a0<\/p>\n
\u3044\u305a\u308c\u306e\u6b20\u9665\u3082\u3001Defender\u306e\u30d0\u30fc\u30b8\u30e7\u30f34.18.26040.7\u3067\u4fee\u6b63\u3055\u308c\u3066\u3044\u308b\u3002\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u306e\u767a\u8868\u306b\u3088\u308b\u3068\u3001Defender\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u30c7\u30a3\u30b9\u30af\u4e0a\u306b\u6b8b\u3063\u3066\u3044\u3066\u3082\u3001\u540c\u30a2\u30d7\u30ea\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u306f\u60aa\u7528\u3055\u308c\u306a\u3044\u3088\u3046\u3060\u3002<\/p>\n
\u00a0<\/p>\n
\u307e\u305f\u3001\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u306f\u305d\u308c\u305e\u308c\u306e\u8106\u5f31\u6027\u304c\u653b\u6483\u306b\u60aa\u7528\u3055\u308c\u305f\u3068\u8b66\u544a\u3057\u305f\u3082\u306e\u306e\u3001\u305d\u306e\u8a73\u7d30\u3092\u660e\u3089\u304b\u306b\u3057\u3066\u3044\u306a\u3044\u3002\u7c73\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5e81\uff08CISA\uff09\u306f20\u65e5\u3001\u3053\u306e2\u4ef6\u306e\u8106\u5f31\u6027\u3092KEV\uff08\u60aa\u7528\u304c\u78ba\u8a8d\u6e08\u307f\u306e\u8106\u5f31\u6027\uff09\u30ab\u30bf\u30ed\u30b0\u306b\u8ffd\u52a0\u3057\u3001\u9023\u90a6\u653f\u5e9c\u5404\u6a5f\u95a2\u306b\u5bfe\u3057\u30666\u67083\u65e5\u307e\u3067\u306b\u30d1\u30c3\u30c1\u3092\u9069\u7528\u3059\u308b\u3088\u3046\u6307\u793a\u3057\u305f\u3002<\/p>\n
Cisco Secure Workload\u306bCVSS 10.0\u306e\u91cd\u5927\u306a\u8106\u5f31\u6027\u3001\u30b5\u30a4\u30c8\u7ba1\u7406\u8005\u6a29\u9650\u3092\u4ed8\u4e0e\u3059\u308b\u6050\u308c\uff08CVE-2026-20223\uff09<\/p>\n
BleepingComputer \u2013 May 21, 2026<\/p>\n
\u30b7\u30b9\u30b3\u306f20\u65e5\u3001Cisco Secure Workload\u306e\u91cd\u5927\u306a\u8106\u5f31\u6027CVE-2026-20223\uff08CVSS\u30b9\u30b3\u30a2 10.0\uff09\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u305f\u3002<\/p>\n
\u00a0<\/p>\n
\u3053\u306e\u8106\u5f31\u6027\u306fSecure Workload\u306e\u5185\u90e8REST API\u306b\u5b58\u5728\u3057\u3001REST API\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u6642\u306e\u691c\u8a3c\u3068\u8a8d\u8a3c\u304c\u4e0d\u5341\u5206\u3067\u3042\u308b\u3053\u3068\u306b\u8d77\u56e0\u3059\u308b\u3082\u306e\u3002\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u7d30\u5de5\u3055\u308c\u305fAPI\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3067\u304d\u308c\u3070\u3001\u672a\u8a8d\u8a3c\u306e\u653b\u6483\u8005\u304c\u30b5\u30a4\u30c8\u7ba1\u7406\u8005\u6a29\u9650\u3067\u30ea\u30bd\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3068\u3044\u3046\u3002<\/p>\n
\u00a0<\/p>\n
\u30b7\u30b9\u30b3\u306e\u767a\u8868\u3067\u306f\u56de\u907f\u7b56\u304c\u5b58\u5728\u305b\u305a\u3001\u30d0\u30fc\u30b8\u30e7\u30f33.9\u4ee5\u524d\u306f\u4fee\u6b63\u30ea\u30ea\u30fc\u30b9\u3078\u306e\u79fb\u884c\u304c\u30013.10\u30684.0\u306f\u305d\u308c\u305e\u308c3.10.8.3\uff0f4.0.3.17\u3078\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u304c\u547c\u3073\u304b\u3051\u3089\u308c\u305f\u3002\u4eca\u56de\u306f\u30aa\u30f3\u30d7\u30ec\u30df\u30b9\u74b0\u5883\u306e\u9867\u5ba2\u5411\u3051\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3001\u30af\u30e9\u30a6\u30c9\u30d9\u30fc\u30b9\u306eSecure Workload SaaS\u74b0\u5883\u306b\u304a\u3044\u3066\u306f\u3059\u3067\u306b\u5bfe\u51e6\u6e08\u307f\u3068\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n
\u00a0<\/p>\n
\u73fe\u5728\u307e\u3067\u306b\u3001\u3053\u306e\u6b20\u9665\u304c\u653b\u6483\u3067\u60aa\u7528\u3055\u308c\u305f\u8a3c\u62e0\u306f\u898b\u3064\u304b\u3063\u3066\u3044\u306a\u3044\u304c\u3001\u904e\u53bb5\u5e74\u9593\u3067\u60aa\u7528\u304c\u78ba\u8a8d\u3055\u308c\u305f\u30b7\u30b9\u30b3\u306e\u8106\u5f31\u6027\u306f91\u4ef6\u3092\u6570\u3048\u3001\u305d\u306e\u3046\u30616\u4ef6\u304c\u3055\u307e\u3056\u307e\u306a\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u30b0\u30eb\u30fc\u30d7\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n
\u00a0<\/p>\n
\u540c\u793e\u306f\u4eca\u67086\u65e5\u306bCrosswork Network Controller\uff08CNC\uff09\u304a\u3088\u3073Network Services Orchestrator\uff08NSO\uff09\u306e\u30b5\u30fc\u30d3\u30b9\u62d2\u5426\uff08DoS\uff09\u8106\u5f31\u6027\u306b\u5bfe\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u300114\u65e5\u306b\u3082Catalyst SD-WAN\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308bCVE-2026-20182\u306b\u3064\u3044\u3066\u8b66\u544a\u3057\u305f\u3070\u304b\u308a\u3060\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u3001Defender\u306e\u60aa\u7528\u3055\u308c\u305f\u30bc\u30ed\u30c7\u30a4RedSun\u3068UnDefend\u3092\u4fee\u6b63\uff08CVE-2026-41091\u3001CVE-2026-45498\uff09 SecurityWeek \u2013 May 21, 2026 \u30de\u30a4\u30af\u30ed\u30bd\u30d5<\/p>\n","protected":false},"author":2,"featured_media":2843036,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[762827],"tags":[762834,762833,521918,162246,2662,762832],"class_list":{"0":"post-2843035","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\/116616722233707484","error":""},"_links":{"self":[{"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/posts\/2843035","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=2843035"}],"version-history":[{"count":0,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/posts\/2843035\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/media\/2843036"}],"wp:attachment":[{"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/media?parent=2843035"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/categories?post=2843035"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wacoca.com\/news\/wp-json\/wp\/v2\/tags?post=2843035"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}