{"id":16057,"date":"2026-04-22T15:01:27","date_gmt":"2026-04-22T06:01:27","guid":{"rendered":"https:\/\/m365jp.net\/?p=16057"},"modified":"2026-04-22T15:06:12","modified_gmt":"2026-04-22T06:06:12","slug":"mc1287681-an-updated-version-of-the-april-2026-scan-cab-is-available","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-22-mc1287681-an-updated-version-of-the-april-2026-scan-cab-is-available","title":{"rendered":"MC1287681 | An updated version of the April 2026 Scan Cab is available"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1287681 | An updated version of the April 2026 Scan Cab is available<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>stayInformed<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>04\/22\/2026 05:08:12<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>04\/22\/2026 05:08:11<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>04\/22\/2027 05:08:11<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<div><b>IMPORTANT<\/b>: This notice is only relevant for environments where:<\/div>\n<ul>\n<li>ASP.NET Core is used<\/li>\n<li>Scan Cab is used to check for update compliance<\/li>\n<li>The April 2026 Scan Cab was deployed before 10:00 PM PT on April 21, 2026<\/li>\n<\/ul>\n<div>&nbsp;<\/div>\n<div>An updated version of the April 2026 Scan Cab was made available at 10:00 PM PT on April 21, 2026. This Scan Cab includes new metadata corresponding to updates for ASP.NET Core.<\/div>\n<div>&nbsp;<\/div>\n<div>The Microsoft update for ASP.NET Core released on April 21, 2026, includes additional protections to address  <a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2026-40372\" rel=\"noopener noreferrer\" target=\"_blank\">  CVE-2026-40372<\/a>: ASP.NET Core Elevation of Privilege Vulnerability. See the Additional information section of this message for details.<\/div>\n<div>  <\/div>\n<div><b>How this affects your organization:<\/b><\/div>\n<div>IT administrators who downloaded the Scan Cab before 10:00 PM PT on April 21, 2026, should re-acquire and re-deploy it if the Scan Cab is used to assess updates for environments where ASP.NET Core is used.<\/div>\n<div>  <\/div>\n<div>No action is required for environments where Scan Cab is not employed or ASP.NET Core is not used. However, please note that there might be non-Microsoft applications that utilize Scan Cab. Review the documentation for any software and update deployment   tools used in your organization to determine whether this applies to your environment.<\/div>\n<div>  <\/div>\n<div><b>What you need to do to prepare:<\/b><\/div>\n<div>Administrators can download and deploy the updated Scan Cab using their usual processes. For more information, see the Additional information section below.<\/div>\n<div>&nbsp;<\/div>\n<div><b>Additional information:<\/b><\/div>\n<ul>\n<li>Updated Scan Cab: <a href=\"https:\/\/go.microsoft.com\/fwlink\/?LinkID=74689\" rel=\"noopener noreferrer\" target=\"_blank\">  Download the new Scan Cab here<\/a><\/li>\n<li><a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2026-40372\" rel=\"noopener noreferrer\" target=\"_blank\">CVE-2026-40372<\/a>: ASP.NET Core Elevation of Privilege Vulnerability<\/li>\n<li><a href=\"https:\/\/techcommunity.microsoft.com\/t5\/windows-it-pro-blog\/announcing-a-smaller-wsus-scan-cab\/ba-p\/2928256?msclkid=256145ccd0c011ec9266b53af8d0aca1\" rel=\"noopener noreferrer\" target=\"_blank\">Announcing a smaller WSUS Scan Cab &#8211; Microsoft Tech Community<\/a>:   Learn more about WSUS and the Scan Cab process<\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/windows\/win32\/wua_sdk\/using-wua-to-scan-for-updates-offline?tabs=vbscript\" rel=\"noopener noreferrer\" target=\"_blank\">Using WUA to Scan for Updates Offline &#8211; Win32 apps | Microsoft Docs<\/a>: Windows Update Agent (WUA)   can be used to scan computers for security updates without connecting to Windows Update<\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/windows-server\/administration\/windows-server-update-services\/manage\/wsus-and-the-catalog-site\" rel=\"noopener noreferrer\" target=\"_blank\">WSUS and the Catalog Site | Microsoft Docs<\/a>: The Catalog Site used by WSUS to   import updates and drivers<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<div><b>\u91cd\u8981:<\/b>\u3053\u306e\u901a\u77e5\u306f\u4ee5\u4e0b\u306e\u74b0\u5883\u306b\u306e\u307f\u9069\u7528\u3055\u308c\u307e\u3059:<\/div>\n<ul>\n<li>ASP.NET \u30b3\u30a2\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059<\/li>\n<li>Scan Cab\u306f\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306e\u9069\u5408\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059<\/li>\n<li>2026\u5e744\u6708\u306e\u30b9\u30ad\u30e3\u30f3\u30ad\u30e3\u30d6\u306f\u30012026\u5e744\u670821\u65e5\u5348\u5f8c10\u6642(\u592a\u5e73\u6d0b\u6642\u9593)\u524d\u306b\u5c55\u958b\u3055\u308c\u307e\u3057\u305f<\/li>\n<\/ul>\n<div>&nbsp;<\/div>\n<div>2026\u5e744\u6708\u7248\u306eScan Cab\u306e\u66f4\u65b0\u7248\u306f\u30012026\u5e744\u670821\u65e5\u5348\u5f8c10\u6642(\u592a\u5e73\u6d0b\u6642\u9593)\u306b\u516c\u958b\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306eScan Cab\u306b\u306f ASP.NET Core\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306b\u5bfe\u5fdc\u3059\u308b\u65b0\u3057\u3044\u30e1\u30bf\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/div>\n<div>&nbsp;<\/div>\n<div>2026\u5e744\u670821\u65e5\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f ASP.NET Core\u306eMicrosoft\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306b\u306f\u3001 <a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2026-40372\" rel=\"noopener noreferrer\" target=\"_blank\">  CVE-2026-40372<\/a>:ASP.NET \u30b3\u30a2\u7279\u6a29\u6607\u683c\u8106\u5f31\u6027\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306e\u8ffd\u52a0\u4fdd\u8b77\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u8a73\u7d30\u306f\u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u300c\u8ffd\u52a0\u60c5\u5831\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/div>\n<div>  <\/div>\n<div><b>\u3053\u308c\u304c\u3042\u306a\u305f\u306e\u7d44\u7e54\u306b\u4e0e\u3048\u308b\u5f71\u97ff:<\/b><\/div>\n<div>2026\u5e744\u670821\u65e5\u5348\u5f8c10\u6642(\u592a\u5e73\u6d0b\u6642\u9593)\u524d\u306bScan Cab\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305fIT\u7ba1\u7406\u8005\u306f\u3001ASP.NET Core\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u74b0\u5883\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u8a55\u4fa1\u306bScan Cab\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u518d\u5ea6\u53d6\u5f97\u3057\u3066\u518d\u30c7\u30d7\u30ed\u30a4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<div>  <\/div>\n<div>\u30b9\u30ad\u30e3\u30f3\u30ad\u30e3\u30d6\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u74b0\u5883\u3084 ASP.NET \u30b3\u30a2\u304c\u4f7f\u308f\u308c\u3066\u3044\u306a\u3044\u74b0\u5883\u3067\u306f\u3001\u4f55\u306e\u64cd\u4f5c\u3082\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001Scan Cab\u3092\u5229\u7528\u3059\u308bMicrosoft\u4ee5\u5916\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3082\u3042\u308b\u5834\u5408\u304c\u3042\u308b\u3053\u3068\u306b\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002\u7d44\u7e54\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u78ba\u8a8d\u3057\u3001\u5c0e\u5165\u30c4\u30fc\u30eb\u3092\u66f4\u65b0\u3057\u3066\u3001\u3053\u306e\u30eb\u30fc\u30eb\u304c\u74b0\u5883\u306b\u9069\u7528\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<div>  <\/div>\n<div><b>\u6e96\u5099\u306e\u305f\u3081\u306b\u3084\u308b\u3079\u304d\u3053\u3068:<\/b><\/div>\n<div>\u7ba1\u7406\u8005\u306f\u901a\u5e38\u306e\u624b\u9806\u3067\u66f4\u65b0\u3055\u308c\u305f\u30b9\u30ad\u30e3\u30f3\u30ad\u30e3\u30d6\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u5c55\u958b\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u4e0b\u8a18\u306e\u300c\u8ffd\u52a0\u60c5\u5831\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/div>\n<div>&nbsp;<\/div>\n<div><b>\u8ffd\u52a0\u60c5\u5831:<\/b><\/div>\n<ul>\n<li>\u66f4\u65b0\u3055\u308c\u305f\u30b9\u30ad\u30e3\u30f3\u30ad\u30e3\u30d6:<a href=\"https:\/\/go.microsoft.com\/fwlink\/?LinkID=74689\" rel=\"noopener noreferrer\" target=\"_blank\">\u65b0\u3057\u3044\u30b9\u30ad\u30e3\u30f3\u30ad\u30e3\u30d6\u306f\u3053\u3061\u3089\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a>\u3067\u304d\u307e\u3059<\/li>\n<li><a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2026-40372\" rel=\"noopener noreferrer\" target=\"_blank\">CVE-2026-40372<\/a>:ASP.NET \u30b3\u30a2\u6a29\u9650\u6607\u683c\u8106\u5f31\u6027<\/li>\n<li><a href=\"https:\/\/techcommunity.microsoft.com\/t5\/windows-it-pro-blog\/announcing-a-smaller-wsus-scan-cab\/ba-p\/2928256?msclkid=256145ccd0c011ec9266b53af8d0aca1\" rel=\"noopener noreferrer\" target=\"_blank\">\u3088\u308a\u5c0f\u578b\u306eWSUS Scan Cab\u306e\u767a\u8868 &#8211; Microsoft Tech Community<\/a>:WSUS\u3068Scan   Cab\u30d7\u30ed\u30bb\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u306f\u3053\u3061\u3089<\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/windows\/win32\/wua_sdk\/using-wua-to-scan-for-updates-offline?tabs=vbscript\" rel=\"noopener noreferrer\" target=\"_blank\">WUA\u3092\u4f7f\u3063\u3066\u30aa\u30d5\u30e9\u30a4\u30f3\u3067\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u65b9\u6cd5 &#8211; Win32\u30a2\u30d7\u30ea |Microsoft Docs<\/a>: Windows Update Agent(WUA)\u306f\u3001Windows Update\u306b\u63a5\u7d9a\u305b\u305a\u306b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3067\u304d\u307e\u3059<\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/windows-server\/administration\/windows-server-update-services\/manage\/wsus-and-the-catalog-site\" rel=\"noopener noreferrer\" target=\"_blank\">WSUS\u3068\u30ab\u30bf\u30ed\u30b0\u30b5\u30a4\u30c8 |Microsoft Docs<\/a>:WSUS\u304c\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3084\u30c9\u30e9\u30a4\u30d0\u30fc\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u30ab\u30bf\u30ed\u30b0\u30b5\u30a4\u30c8<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MC1287681 | An updated version of the April 2026 Scan Cab is available Classification stayInformed Last Update [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-16057","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=16057"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/16057\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=16057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=16057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=16057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}