{"id":134408,"date":"2026-05-23T08:49:49","date_gmt":"2026-05-22T23:49:49","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=134408"},"modified":"2026-05-23T08:49:49","modified_gmt":"2026-05-22T23:49:49","slug":"microsoft-vs-researcher-yellowkey","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/microsoft-vs-researcher-yellowkey\/","title":{"rendered":"Windows 11\u300cYellowKey\u300d\u8106\u5f31\u6027\u3067\u7814\u7a76\u8005\u3068Microsoft\u304c\u5bfe\u7acb\uff1a\u4f55\u304c\u8d77\u304d\u305f\u306e\u304b"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2026\/01\/bitlocker.jpg\" alt=\"\" width=\"1280\" height=\"853\" class=\"aligncenter size-full wp-image-132624\" \/><\/p>\n<p>Windows 11\u306e\u56de\u5fa9\u74b0\u5883(WinRE)\u306b\u5b58\u5728\u3059\u308b\u8106\u5f31\u6027<strong>\u300cCVE\u20112026\u201145585(\u901a\u79f0: YellowKey)\u300d<\/strong>\u3092\u3081\u3050\u308a\u3001Microsoft\u3068\u8106\u5f31\u6027\u3092\u767a\u898b\u3057\u305f\u7814\u7a76\u8005Nightmare\u2011Eclipse\u6c0f\u306e\u9593\u3067\u6469\u64e6\u304c\u751f\u3058\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>YellowKey\u8106\u5f31\u6027\u306f\u3001Windows\u306e\u6697\u53f7\u5316\u6a5f\u80fdBitLocker\u3092USB\u7d4c\u7531\u3067\u56de\u907f\u3067\u304d\u3066\u3057\u307e\u3046\u91cd\u5927\u306a\u554f\u984c\u3067\u3059\u3002\u7814\u7a76\u8005\u304c\u516c\u958b\u3057\u305fPoC\u306b\u3088\u308b\u3068\u3001\u653b\u6483\u8005\u306fWinRE\u5185\u306e\u300cFsTx\u300d\u30d5\u30a9\u30eb\u30c0\u30fc\u3092\u60aa\u7528\u3057\u3001USB\u30e1\u30c7\u30a3\u30a2\u3092\u4f7f\u3063\u3066BitLocker\u3092\u30d0\u30a4\u30d1\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Microsoft\u3082\u3053\u306e\u8106\u5f31\u6027\u3092\u8a8d\u3081\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u306b\u66ab\u5b9a\u7684\u306a\u7de9\u548c\u7b56\u3092\u63d0\u793a\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2>Microsoft\u304c\u516c\u958b\u3057\u305f\u66ab\u5b9a\u5bfe\u7b56<\/h2>\n<p>Microsoft\u306f\u3001WinRE\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u8a2d\u5b9a\u304b\u3089autofstx.exe\u3092\u524a\u9664\u3059\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092<a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2026-45585\">\u516c\u958b<\/a>\u3057\u3001\u3053\u308c\u3092\u300c\u66ab\u5b9a\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fee\u6b63\u300d\u3068\u4f4d\u7f6e\u3065\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u7279\u5fb4\u306f\u6b21\u306e\u901a\u308a\u3067\u3059:<\/p>\n<ul>\n<li>BootExecute\u304b\u3089autofstx.exe\u3092\u9664\u5916\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u6a29\u306e\u9ad8\u3044\u74b0\u5883\u3067\u306e\u5b9f\u884c\u3092\u9632\u3050<\/li>\n<li>WinRE\u30a4\u30e1\u30fc\u30b8\u3092\u30de\u30a6\u30f3\u30c8\u3057\u3001\u30aa\u30d5\u30e9\u30a4\u30f3\u30ec\u30b8\u30b9\u30c8\u30ea\u3092\u7de8\u96c6\u3057\u3066\u518d\u5c01\u5370\u3059\u308b<\/li>\n<li>autofstx.exe\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u5909\u66f4\u305b\u305a\u7d42\u4e86\u3059\u308b\u5b89\u5168\u8a2d\u8a08<\/li>\n<\/ul>\n<p>\u4f01\u696d\u306e\u6301\u3061\u51fa\u3057\u7aef\u672b\u306a\u3069\u3001\u76d7\u96e3\u30ea\u30b9\u30af\u306e\u3042\u308b\u74b0\u5883\u3067\u306f\u7279\u306b\u9069\u7528\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>Microsoft\u3068\u7814\u7a76\u8005\u306e\u5bfe\u7acb<\/h2>\n<p>Microsoft\u306f\u4eca\u56de\u306ePoC\u516c\u958b\u306b\u3064\u3044\u3066\u300c\u5354\u8abf\u7684\u8106\u5f31\u6027\u958b\u793a(CVD)\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u53cd\u3057\u3066\u3044\u308b\u300d\u3068\u30b3\u30e1\u30f3\u30c8\u3057\u307e\u3057\u305f\u3002<\/p>\n<blockquote><p>\nMicrosoft is aware of a security feature bypass vulnerability in Windows publicly referred to as \"YellowKey\". The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices.<\/p>\n<p>Microsoft\u306f\u3001\u300cYellowKey\u300d\u3068\u3057\u3066\u516c\u306b\u8a00\u53ca\u3055\u308c\u3066\u3044\u308bWindows\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u30d0\u30a4\u30d1\u30b9\u306e\u8106\u5f31\u6027\u3092\u8a8d\u8b58\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306e\u6982\u5ff5\u5b9f\u8a3c\uff08PoC\uff09\u304c\u3001\u5354\u8abf\u7684\u306a\u8106\u5f31\u6027\u958b\u793a\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u9055\u53cd\u3059\u308b\u5f62\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\n<\/p><\/blockquote>\n<p>\u3053\u308c\u306b\u5bfe\u3057Nightmare\u2011Eclipse\u6c0f\u306f\u5f37\u304f\u53cd\u767a\u3057\u3001\u81ea\u8eab\u306e<a href=\"https:\/\/deadeclipse666.blogspot.com\/2026\/05\/dear-microsoft.html\">\u30d6\u30ed\u30b0<\/a>\u3067\u6b21\u306e\u3088\u3046\u306a\u4e3b\u5f35\u3092\u5c55\u958b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>Microsoft \u304c MSRC \u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4e00\u65b9\u7684\u306b\u524a\u9664\u3057\u305f<\/li>\n<li>\u8aac\u660e\u3092\u6c42\u3081\u3066\u3082\u8fd4\u7b54\u304c\u306a\u304b\u3063\u305f<\/li>\n<li>\u300cCVD\u9055\u53cd\u300d\u3068\u516c\u306b\u975e\u96e3\u3055\u308c\u305f\u3053\u3068\u306f\u540d\u8a89\u6bc0\u640d\u306b\u3042\u305f\u308b<\/li>\n<\/ul>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u8106\u5f31\u6027\u305d\u306e\u3082\u306e\u306fMicrosoft\u304c\u8a8d\u3081\u3001\u66ab\u5b9a\u5bfe\u7b56\u3082\u63d0\u793a\u3055\u308c\u305f\u3082\u306e\u306e\u3001\u7814\u7a76\u8005\u3068\u306e\u95a2\u4fc2\u60aa\u5316\u304c\u8868\u9762\u5316\u3057\u305f\u3053\u3068\u3067\u3001\u4eca\u5f8c\u306e\u5bfe\u5fdc\u3084\u900f\u660e\u6027\u304c\u6ce8\u76ee\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7814\u7a76\u8005\u3068\u4f01\u696d\u306e\u5354\u8abf\u4f53\u5236\u304c\u554f\u308f\u308c\u308b\u4e8b\u4f8b\u3068\u3057\u3066\u3001\u3057\u3070\u3089\u304f\u8b70\u8ad6\u304c\u7d9a\u304d\u305d\u3046\u3067\u3059<\/p>\n<p>[via <a href=\"https:\/\/www.neowin.net\/news\/microsoft-apparnetly-blames-researcher-for-publicly-exposing-a-windows-11-recovery-flaw\/\">Neowin<\/a>]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Windows 11\u306e\u56de\u5fa9\u74b0\u5883(WinRE)\u306b\u5b58\u5728\u3059\u308b\u8106\u5f31\u6027\u300cCVE\u20112026\u201145585(\u901a\u79f0: YellowKey)\u300d\u3092\u3081\u3050\u308a\u3001Microsoft\u3068\u8106\u5f31\u6027\u3092\u767a\u898b\u3057\u305f\u7814\u7a76\u8005Nightmare\u2011Eclipse\u6c0f\u306e\u9593\u3067\u6469\u64e6 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":132624,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[3298,4387],"class_list":["post-134408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-windows","tag-windows11"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/134408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/comments?post=134408"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/134408\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/132624"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=134408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=134408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=134408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}