{"id":61543,"date":"2026-10-14T13:59:59","date_gmt":"2026-10-14T13:59:59","guid":{"rendered":"https:\/\/www.threatshub.org\/blog\/windows-update-patches-a-whopping-1400-security-bugs-including-2-zero-days\/"},"modified":"2026-10-14T13:59:59","modified_gmt":"2026-10-14T13:59:59","slug":"windows-update-patches-a-whopping-1400-security-bugs-including-2-zero-days","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/windows-update-patches-a-whopping-1400-security-bugs-including-2-zero-days\/","title":{"rendered":"Windows update patches a whopping 1,400 security bugs \u2013 \u00a0including 2 zero days"},"content":{"rendered":"<h3 class=\"wp-block-heading\">ZDNET\u2019s key takeaways<\/h3>\n<ul class=\"wp-block-list\">\n<li>The October Windows update squashes more than 1,400 security flaws.<\/li>\n<li>This marks Microsoft\u2019s final supported update for Windows 24H2.<\/li>\n<li>The update also fixes issues with File Explorer and Bluetooth.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<p>Microsoft continues to break bug-squashing records, with October\u2019s Windows update patching more than 1,400 security vulnerabilities. As usual, the actual number of bug fixes varies based on which ones are counted, but hovers around 1,410.<\/p>\n<p><strong>Also: <a href=\"https:\/\/www.zdnet.com\/article\/how-to-upgrade-incompatible-windows-10-pc-to-windows-11\/\">How to upgrade your \u2018incompatible\u2019 Windows 10 PC to Windows 11 \u2013 for free<\/a><\/strong><\/p>\n<p>Released Tuesday, the latest update is also the first official one for Windows 11 26H2 and the last one for Windows 11 24H2 Home and Pro editions. Plus, it resolves specific issues with built-in features like File Explorer and Bluetooth, and even lets you remap the Copilot keyboard key to trigger a different action.<\/p>\n<div class=\"wp-block-ziff-davis-exco-video is-injected\" id=\"exco-video-block-6a8e06fe4d2cfb09fd68fb54-1367606-4\" data-exco-video-id data-exco-playlist-id=\"6a8e06fe4d2cfb09fd68fb54\" data-exco-video-title data-exco-video-src data-exco-video-duration=\"0\" data-exco-video-poster data-exco-suppress-ads=\"0\" data-exco-autoplay=\"0\" data-exco-sticky=\"1\">\n<p class=\"exco-video__eyebrow\">More from ZDNET<\/p>\n<\/p><\/div>\n<p>As usual, the updates are aimed at all supported versions of Windows 11. These include all editions of Windows 11 <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/10\/kb5127648-windows-11-24h2-25h2-26h2-security-update\" target=\"_blank\" rel=\"noopener\">26H2<\/a>, <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/10\/kb5127646-windows-11-26h1-security-update\" target=\"_blank\" rel=\"noopener\">26H1<\/a>, <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/10\/kb5127648-windows-11-24h2-25h2-26h2-security-update\" target=\"_blank\" rel=\"noopener\">25H2<\/a>, and <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/10\/kb5127648-windows-11-24h2-25h2-26h2-security-update\" target=\"_blank\" rel=\"noopener\">24H2<\/a>, as well as <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/10\/kb5126653-windows-11-23h2-security-update\" target=\"_blank\" rel=\"noopener\">23H2 Enterprise and Education<\/a>. Windows 10 PCs enrolled in Microsoft\u2019s <a href=\"https:\/\/www.zdnet.com\/article\/how-to-get-free-windows-10-security-patches-until-october-2027\/\">Extended Security Updates (ESU) program<\/a> also receive the latest security patches.<\/p>\n<p>With such a large collection of bug fixes, you\u2019ll want to install this one. In Windows 11, head to Settings and select Windows Update. You may find the update already installed and just waiting for a reboot. If not, click the button to check for updates to download and install it. In Windows 10, go to Settings, select Windows Update, and install the latest one.<\/p>\n<p>Each new annual version of Windows, such as 24H2 or 23H2, loses support after 24 months, which means no more security updates or bug fixes. With Windows 11 24H2 hitting this milestone, you\u2019ll need to jump to the latest version to keep your PC updated. For that, head to Windows Update and check for updates. You should see a notice telling you that Windows 11, version 26H2 is available. Click the link to download and install it.<\/p>\n<p><strong>Also: <a href=\"https:\/\/www.zdnet.com\/tech\/transfer-windows-apps-data-to-new-pc-unigetui\/\">My favorite Windows app makes moving to a new PC so easy<\/a><\/strong><\/p>\n<p>The same deadline looms for Windows 11 23H2 Enterprise and Education editions, which reach end of support next month on November 10. Here, you or your organization will also need to update Windows to the latest version to stay protected.<\/p>\n<h2 class=\"wp-block-heading\">Critical vulnerabilities and zero days<\/h2>\n<p>Specifically, the October update fixes 80 critical vulnerabilities and two zero-days, according to patch management provider Action1 in <a href=\"https:\/\/www.action1.com\/patch-tuesday\/patch-tuesday-october-2026\/\" target=\"_blank\" rel=\"noopener\">a new advisory<\/a>.<\/p>\n<p>One of the zero-days has already been exploited in the wild. Designated as <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/cve-2026-96951\" target=\"_blank\" rel=\"noopener\">CVE-2026-96951<\/a>, this one could allow a remote attacker to bypass security protection by exploiting a flaw in Windows Shell.<\/p>\n<p><strong>Also: <a href=\"https:\/\/www.zdnet.com\/tech\/free-microsoft-word-clone-alternative-linux-wordcraft\/\">I tried the free Microsoft Word clone on Linux<\/a><\/strong><\/p>\n<p>\u201cThis vulnerability presents a serious security threat because it allows attackers to bypass an important Windows security defense designed to protect users from potentially dangerous files,\u201d Action1 said in its advisory. \u201cAttackers can exploit this weakness remotely by convincing users to open specially crafted files or interact with malicious content. Successful exploitation could weaken Windows security protections and increase the risk of malicious content reaching users without the expected security warnings.\u201d<\/p>\n<p>Labeled <a href=\"https:\/\/overflo.ws\/cve\/CVE-2026-108398\" target=\"_blank\" rel=\"noopener\">CVE-2026-108398<\/a>, the other zero-day was publicly disclosed before the fix was rolled out and could let an attacker skirt past security measures by exploiting a flaw in Microsoft\u2019s .net Framework.<\/p>\n<p>Aside from the security patches, the October update fixes some glitches in File Explorer. You can now more easily preview downloaded files using the Preview pane. File Explorer also now retains the state of sections (expanded or collapsed), so you can more quickly pick up where you left off. Plus, thumbnail previews for cloud-based files in the Details pane will render more reliably.<\/p>\n<p><strong>Also: <a href=\"https:\/\/www.zdnet.com\/tech\/microsoft-new-nvidia-pcs-extreme-power-users\/\">Microsoft\u2019s new Nvidia PCs are cool for extreme power users<\/a><\/strong><\/p>\n<p>For those of you who grapple with Bluetooth issues, the update also improves the accuracy and stability of connected Bluetooth devices and accessories.<\/p>\n<p>And last but not least, the update adds a new setting in Windows 11 that lets you <a href=\"https:\/\/www.zdnet.com\/article\/remap-windows-copilot-key\/\">remap the Copilot key<\/a>. Instead of triggering Microsoft\u2019s AI, the key can function as the right Ctrl key or the right-click context menu on the desktop and in File Explorer.<\/p>\n<section class=\"zd-disqus\" data-zd-disqus data-disqus-shortname=\"zdnet-1\" data-disqus-identifier=\"1367606\" data-disqus-url=\"https:\/\/www.zdnet.com\/tech\/windows-october-update-patches-file-explorer-bluetooth\/\" data-disqus-title=\"Windows update patches a whopping 1,400 security bugs \u2013 &nbsp;including 2 zero days\" data-disqus-api-key=\"y0Dp0T6itn9rbTvSf2xkzkhaUL7c5EJsmaWF3XYBqXNz8GHH7wSX1nXi4qzdihWV\" data-disqus-show-label=\"Show Comments\" data-disqus-hide-label=\"Hide Comments\"> <button type=\"button\" class=\"zd-disqus__toggle\" data-zd-disqus-toggle aria-expanded=\"false\"> <span class=\"zd-disqus__toggle-text\" data-zd-disqus-label>Show Comments<\/span> <svg class=\"zd-disqus__toggle-icon\" width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" aria-hidden=\"true\" focusable=\"false\"> <path d=\"M7 1 V12.5 M2.5 8 L7 12.5 L11.5 8\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" \/> <\/svg> <\/button> <\/p>\n<div class=\"zd-disqus__panel\" data-zd-disqus-panel hidden>\n<p class=\"zd-disqus__consent\" data-zd-disqus-consent hidden>Please accept cookies to view the comments powered by Disqus.<\/p>\n<\/p><\/div>\n<p> <noscript>Please enable JavaScript to view the comments powered by Disqus.<\/noscript> <\/section>\n<div class=\"articleAuthorBioFooter-container\">\n<div class=\"articleAuthorBioFooter\">\n<div class=\"articleAuthorBioFooter_body\">\n<div class=\"articleAuthorBioFooter_nameBlock\">\n<div class=\"c-cmsImage articleAuthorBioFooter_image\"> <picture class=\"c-cmsImage_image\"> <img alt=\"Lance Whitney\" src=\"https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/lance-31.png?w=64\" srcset=\"https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/lance-31.png?w=128 2x\" class=\"avatar avatar-64 photo\" height=\"64\" width=\"64\" loading=\"lazy\" decoding=\"async\"> <\/picture> <\/div>\n<div class=\"articleAuthorBioFooter_nameText\">\n<div class=\"articleAuthorBioFooter_name\"> <span>Lance Whitney<\/span> <\/div>\n<p> <span class=\"articleAuthorBioFooter_credentials\"> <\/span> <\/div>\n<\/p><\/div>\n<p> <span class=\"articleAuthorBioFooter_bio has-bio\"> <span>Lance Whitney is a technology journalist with an IT background. He&#8217;s written for TechRepublic, PCMag, Macworld, and Time, among others, He also teaches classes in AI, cybersecurity, and social media.<\/span> <a href=\"https:\/\/www.zdnet.com\/meet-the-team\/lancewhitney\/\" rel=\"author\" class=\"articleAuthorBioFooter_link\"> See full bio <\/a> <\/span> <\/div>\n<p> <!-- Latest Articles Section --> <\/p>\n<div class=\"articleAuthorBioFooter_latest\">\n<h3 class=\"articleAuthorBioFooter_latestTitle\"> The Latest from Lance <\/h3>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- .articleAuthorBioFooter-container --><br \/>\nREAD MORE <a href=\"https:\/\/www.zdnet.com\/tech\/windows-october-update-patches-file-explorer-bluetooth\/\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This month\u2019s update also marks the first official one for Windows 11 26H2 and the end of support for Windows 11 24H2 Home and Pro. READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":61544,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[62],"tags":[],"class_list":["post-61543","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zdnet-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Windows update patches a whopping 1,400 security bugs \u2013 \u00a0including 2 zero days 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security &amp; Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent and Cybersecurity News.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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