--- title: Microsoft Patches More Than 1,400 Security Flaws – Krebs... description: Microsoft released October 2026 Patch Tuesday updates fixing more than 1,400 security vulnerabilities, far exceeding September's record of nearly 1,000 and the... canonical: https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Microsoft Patches More Than 1,400 Security Flaws – Krebs on Security | daily.dev og:description: Microsoft released October 2026 Patch Tuesday updates fixing more than 1,400 security vulnerabilities, far exceeding September's record of nearly 1,000 and the... og:url: https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e og:image: https://api.daily.dev/og/posts/SYWbpkL0E.png og:image:alt: Microsoft Patches More Than 1,400 Security Flaws – Krebs on Security og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Microsoft Patches More Than 1,400 Security Flaws – Krebs on Security **[Krebs on Security](https://daily.dev/sources/krebsonsecurity)** · 3 min read · 0 upvotes · 0 comments ## Summary Microsoft released October 2026 Patch Tuesday updates fixing more than 1,400 security vulnerabilities, far exceeding September's record of nearly 1,000 and the prior all-time high of 1,261 CVEs set in 2020. Only one flaw, a Windows Shell security feature bypass (CVE-2026-96951), is a known zero-day being exploited in the wild, while a publicly disclosed .NET Framework bypass (CVE-2026-108398) has no known exploitation yet but had advance public disclosure. At least 78 fixes are rated critical. Experts note Microsoft attributes the surge partly to AI-assisted bug discovery, and warn the volume strains security teams; only 26 Microsoft vulnerabilities this year made CISA's Known Exploited Vulnerabilities catalog, suggesting prioritization should focus there. Windows 10 security updates have been quietly extended to October 2027. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How many vulnerabilities did Microsoft patch in October 2026's Patch Tuesday update? Microsoft patched more than 1,400 security vulnerabilities, a new record that dwarfs September 2026's previous record of nearly 1,000 fixes and surpasses the prior all-time high of 1,261 CVEs set in 2020. At least 78 of the flaws are rated critical, allowing remote code execution with little or no user action. Only one, CVE-2026-96951 in Windows Shell, is a confirmed zero-day being actively exploited. _Teams triaging massive patch batches can follow ongoing Windows vulnerability coverage on daily.dev._ ### Is Windows 10 still getting security updates after October 2026? Yes, Microsoft quietly extended free Extended Security Updates for Windows 10 until October 2027. Originally Windows 10 was slated to stop receiving updates in October 2025, but Microsoft added a year of free updates after pushback, then extended support again for another year without major announcement. _Developers tracking Windows 10 end-of-life timelines can follow updates like this on daily.dev._ ### Which Microsoft CVEs should security teams prioritize patching first after Patch Tuesday? Security teams should prioritize the 26 Microsoft vulnerabilities that have appeared in CISA's Known Exploited Vulnerabilities (KEV) catalog so far in the year, according to Fortra's Tyler Reguly, rather than trying to address all 1,400-plus patched flaws at once. He recommends focusing on exploitable risk and assessing whether teams have the capacity to act on it. _Security teams prioritizing patch rollouts can track vulnerability guidance like this on daily.dev._ ## Similar posts on daily.dev - [Patch Tuesday, May 2026 Edition – Krebs on Security](https://daily.dev/posts/patch-tuesday-may-2026-edition-krebs-on-security-mp4rjfele) · Krebs on Security · 0 upvotes · 0 comments - [Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-days](https://daily.dev/posts/microsoft-may-2026-patch-tuesday-fixes-120-flaws-no-zero-days-phndtxk8i) · BleepingComputer · 0 upvotes · 0 comments - [June 2026 Microsoft Patch Tuesday](https://daily.dev/posts/june-2026-microsoft-patch-tuesday-soc9er861) · Tenable Blog · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#microsoft](https://daily.dev/tags/microsoft), [#windows](https://daily.dev/tags/windows) [View this post on daily.dev](https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Microsoft Patches More Than 1,400 Security Flaws – Krebs on Security","url":"https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e"},"datePublished":"2026-10-13T23:36:49.222Z","dateModified":"2026-10-14T00:35:17.427Z","description":"Microsoft released October 2026 Patch Tuesday updates fixing more than 1,400 security vulnerabilities, far exceeding September's record of nearly 1,000 and the...","image":"https://media.daily.dev/image/upload/s--VDukGCjf--/f_auto/v1722860399/public/Placeholder%2002","thumbnailUrl":"https://media.daily.dev/image/upload/s--VDukGCjf--/f_auto/v1722860399/public/Placeholder%2002","isAccessibleForFree":true,"articleSection":"Krebs on Security","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Krebs on Security","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/deb3e417ddef4d0e8cc4d704becf6004","url":"https://daily.dev/sources/krebsonsecurity"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"security,microsoft,windows","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Krebs on Security","item":"https://daily.dev/sources/krebsonsecurity"},{"@type":"ListItem","position":3,"name":"Microsoft Patches More Than 1,400 Security Flaws – Krebs on Security"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/microsoft-patches-more-than-1-400-security-flaws-krebs-on-security-sywbpkl0e#faq","mainEntity":[{"@type":"Question","name":"How many vulnerabilities did Microsoft patch in October 2026's Patch Tuesday update?","acceptedAnswer":{"@type":"Answer","text":"Microsoft patched more than 1,400 security vulnerabilities, a new record that dwarfs September 2026's previous record of nearly 1,000 fixes and surpasses the prior all-time high of 1,261 CVEs set in 2020. At least 78 of the flaws are rated critical, allowing remote code execution with little or no user action. Only one, CVE-2026-96951 in Windows Shell, is a confirmed zero-day being actively exploited. Teams triaging massive patch batches can follow ongoing Windows vulnerability coverage on daily.dev."}},{"@type":"Question","name":"Is Windows 10 still getting security updates after October 2026?","acceptedAnswer":{"@type":"Answer","text":"Yes, Microsoft quietly extended free Extended Security Updates for Windows 10 until October 2027. Originally Windows 10 was slated to stop receiving updates in October 2025, but Microsoft added a year of free updates after pushback, then extended support again for another year without major announcement. Developers tracking Windows 10 end-of-life timelines can follow updates like this on daily.dev."}},{"@type":"Question","name":"Which Microsoft CVEs should security teams prioritize patching first after Patch Tuesday?","acceptedAnswer":{"@type":"Answer","text":"Security teams should prioritize the 26 Microsoft vulnerabilities that have appeared in CISA's Known Exploited Vulnerabilities (KEV) catalog so far in the year, according to Fortra's Tyler Reguly, rather than trying to address all 1,400-plus patched flaws at once. He recommends focusing on exploitable risk and assessing whether teams have the capacity to act on it. Security teams prioritizing patch rollouts can track vulnerability guidance like this on daily.dev."}}]} ```