{"id":136491,"date":"2026-11-05T10:00:26","date_gmt":"2026-11-05T01:00:26","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=136491"},"modified":"2026-11-05T10:00:26","modified_gmt":"2026-11-05T01:00:26","slug":"cve-2026-83844-microsoft-paint-rce-explained","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/cve-2026-83844-microsoft-paint-rce-explained\/","title":{"rendered":"Microsoft Paint\u306eRCE\u8106\u5f31\u6027\u300cCVE-2026-83844\u300d\u3068\u306f\uff1f \u4fee\u6b63\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5de1\u308b\u6df7\u4e71\u3092\u6574\u7406"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2026\/11\/s_20261105-_094229.webp\" alt=\"\" width=\"1280\" height=\"800\" class=\"aligncenter size-full wp-image-136492\" \/><\/p>\n<p>Microsoft\u304cWindows\u306b\u6a19\u6e96\u642d\u8f09\u3057\u3066\u3044\u308b\u753b\u50cf\u7de8\u96c6\u30a2\u30d7\u30ea\u300cPaint\u300d\u306b\u3001\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u6df1\u523b\u306a\u8106\u5f31\u6027\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002\u554f\u984c\u306e\u8b58\u5225\u756a\u53f7\u306f\u300c<a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2026-83844\">CVE-2026-83844<\/a>\u300d\u3067\u3001CVSS\u30b9\u30b3\u30a2\u306f8.1\u3068\u9ad8\u304f\u8a55\u4fa1\u3055\u308c\u3066\u304a\u308a\u3001\u653b\u6483\u8005\u304c\u7d30\u5de5\u3057\u305f\u753b\u50cf\u3092\u60aa\u7528\u3059\u308b\u3053\u3068\u3067\u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u4e0d\u6b63\u306a\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306e\u8106\u5f31\u6027\u306fPaint\u306b\u304a\u3051\u308b\u300c\u5883\u754c\u5916\u8aad\u307f\u53d6\u308a(Out-of-Bounds Read)\u300d\u306b\u8d77\u56e0\u3059\u308b\u3082\u306e\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u3067\u306e\u653b\u6483\u304c\u53ef\u80fd\u3067\u3059\u3002\u653b\u6483\u306b\u306f\u9ad8\u5ea6\u306a\u6280\u8853\u304c\u5fc5\u8981\u3068\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u306e\u3001\u4e8b\u524d\u306e\u6a29\u9650\u53d6\u5f97\u306f\u4e0d\u8981\u3068\u5206\u985e\u3055\u308c\u3066\u304a\u308a\u3001\u6761\u4ef6\u6b21\u7b2c\u3067\u306f\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u60aa\u7528\u3055\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u7279\u306b\u6c17\u306b\u306a\u308b\u306e\u306f\u3001<strong>\u653b\u6483\u306e\u5165\u53e3\u3068\u306a\u308b\u306e\u304c\u7279\u5225\u306b\u7d30\u5de5\u3055\u308c\u305f\u753b\u50cf\u30d5\u30a1\u30a4\u30eb<\/strong>\u3067\u3042\u308b\u70b9\u3067\u3059\u3002\u666e\u6bb5\u4f55\u6c17\u306a\u304f\u6271\u3046\u753b\u50cf\u304c\u653b\u6483\u624b\u6bb5\u306b\u306a\u308a\u5f97\u308b\u305f\u3081\u3001\u4f01\u696d\u3084\u7d44\u7e54\u306e\u7ba1\u7406\u8005\u306b\u3068\u3063\u3066\u306f\u8b66\u6212\u304c\u5fc5\u8981\u306a\u4e8b\u6848\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n<h2>\u4fee\u6b63\u6e08\u307f\u3068\u3055\u308c\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u5165\u624b\u3067\u304d\u306a\u3044\u554f\u984c<\/h2>\n<p>Microsoft\u306f10\u670813\u65e5\u306b\u8106\u5f31\u6027\u60c5\u5831\u3092\u516c\u958b\u3057\u3001\u5f53\u521d\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30ac\u30a4\u30c9\u3067\u306fPaint 11.2605.91.0\u304c\u4fee\u6b63\u7248\u3068\u3057\u3066\u6848\u5185\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u5b9f\u969b\u306b\u306fMicrosoft Store\u304b\u3089\u305d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5165\u624b\u3067\u304d\u306a\u3044\u3068\u306e\u5831\u544a\u304c\u76f8\u6b21\u3044\u3067\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2026\/11\/s_20261105-_095219.png\" alt=\"\" width=\"1022\" height=\"639\" class=\"aligncenter size-full wp-image-136493\" \/><\/p>\n<p><a href=\"https:\/\/learn.microsoft.com\/en-us\/answers\/questions\/6055591\/microsoft-paint-11-2605-91-0\">Microsoft Q&A<\/a>\u3084<a href=\"https:\/\/www.reddit.com\/r\/sysadmin\/comments\/1xnlkjf\/cve202683844_what_is_everyone_doing\/\">Reddit<\/a>\u3067\u306f\u3001\u30b9\u30c8\u30a2\u306e\u66f4\u65b0\u3092\u78ba\u8a8d\u3057\u3066\u3082\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u306e11.2605.81.0\u306e\u307e\u307e\u3060\u3068\u3044\u3046\u58f0\u304c\u8907\u6570\u6295\u7a3f\u3055\u308c\u3066\u304a\u308a\u3001\u7ba1\u7406\u8005\u306e\u9593\u3067\u6df7\u4e71\u304c\u5e83\u304c\u3063\u3066\u3044\u307e\u3059\u3002WSReset\u306e\u5b9f\u884c\u3084\u66f4\u65b0\u78ba\u8a8d\u3092\u884c\u3063\u3066\u3082\u6539\u5584\u3057\u306a\u3044\u30b1\u30fc\u30b9\u304c\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u72b6\u6cc1\u3092\u8907\u96d1\u306b\u3057\u3066\u3044\u308b\u306e\u304c\u3001\u4fee\u6b63\u7248\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u306b\u95a2\u3059\u308b\u98df\u3044\u9055\u3044\u3067\u3059\u3002Microsoft Security Response Center(MSRC)\u3067\u306f11.2609.401.0\u304c\u4fee\u6b63\u6e08\u307f\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u3057\u3066\u63b2\u8f09\u3055\u308c\u3066\u304a\u308a\u3001\u516c\u958b\u5f53\u521d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u304c\u5358\u306a\u308b\u8a18\u8f09\u30df\u30b9\u3060\u3063\u305f\u53ef\u80fd\u6027\u3082\u6307\u6458\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4fee\u6b63\u7248\u304c\u5730\u57df\u3054\u3068\u306b\u6bb5\u968e\u7684\u306b\u914d\u4fe1\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u3001\u4e00\u90e8\u30e6\u30fc\u30b6\u30fc\u3057\u304b\u66f4\u65b0\u3092\u53d7\u3051\u53d6\u308c\u3066\u3044\u306a\u3044\u3068\u306e\u898b\u65b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u7ba1\u7406\u8005\u306f\u300c\u6700\u65b0\u7248\u8868\u793a\u300d\u3092\u4fe1\u7528\u3057\u3059\u304e\u306a\u3044\u3053\u3068\u304c\u91cd\u8981<\/h2>\n<p>\u4eca\u56de\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u3067\u306f\u3001Microsoft Store\u304c\u300c\u6700\u65b0\u300d\u3068\u8868\u793a\u3057\u3066\u3044\u3066\u3082\u3001\u5fc5\u305a\u3057\u3082\u8106\u5f31\u6027\u5bfe\u7b56\u6e08\u307f\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u306e\u5834\u5408\u3001PowerShell\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5b9f\u969b\u306ePaint\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre>\r\nPS C:\\Users\\sora> Get-AppxPackage Microsoft.Paint | Select-Object Name, Version\r\n\r\nName            Version\r\n----            -------\r\nMicrosoft.Paint 11.2605.81.0\r\n<\/pre>\n<p>\u73fe\u6642\u70b9\u3067\u306f\u3001\u30b9\u30c8\u30a2\u306e\u66f4\u65b0\u72b6\u6cc1\u3060\u3051\u3092\u4fe1\u7528\u305b\u305a\u3001\u5b9f\u969b\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d\u3057\u306a\u304c\u3089Microsoft\u306e\u6700\u65b0\u60c5\u5831\u3092\u6ce8\u8996\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3068\u3044\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft\u304cWindows\u306b\u6a19\u6e96\u642d\u8f09\u3057\u3066\u3044\u308b\u753b\u50cf\u7de8\u96c6\u30a2\u30d7\u30ea\u300cPaint\u300d\u306b\u3001\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u6df1\u523b\u306a\u8106\u5f31\u6027\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002\u554f\u984c\u306e\u8b58\u5225\u756a\u53f7\u306f\u300cCVE-2026-83844\u300d\u3067\u3001CVSS\u30b9\u30b3 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":136492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[87,3957],"class_list":["post-136491","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-microsoft","tag-paint"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/136491","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=136491"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/136491\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/136492"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=136491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=136491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=136491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}