--- title: Microsoft's Patch Tuesday Deluge Continues With August... description: Microsoft's August Patch Tuesday addresses 421 unique CVEs, including two zero-days and 44 critical-severity vulnerabilities. This is the second consecutive... canonical: https://daily.dev/posts/microsoft-s-patch-tuesday-deluge-continues-with-august-updates-votdxsvgb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Microsoft's Patch Tuesday Deluge Continues With August Updates | daily.dev og:description: Microsoft's August Patch Tuesday addresses 421 unique CVEs, including two zero-days and 44 critical-severity vulnerabilities. This is the second consecutive... og:url: https://daily.dev/posts/microsoft-s-patch-tuesday-deluge-continues-with-august-updates-votdxsvgb og:image: https://api.daily.dev/og/posts/votdxSVGb.png og:image:alt: Microsoft's Patch Tuesday Deluge Continues With August Updates 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's Patch Tuesday Deluge Continues With August Updates **[Dark Reading](https://daily.dev/sources/dr)** · 4 min read · 0 upvotes · 0 comments ## Summary Microsoft's August Patch Tuesday addresses 421 unique CVEs, including two zero-days and 44 critical-severity vulnerabilities. This is the second consecutive month of unusually large updates — July's release covered 622 CVEs — as Microsoft increasingly uses AI tools to surface vulnerabilities. Security experts urge prioritization over panic: 236 Windows CVEs are covered by a single cumulative update, as are 98 Office CVEs. Top priorities include CVE-2026-68820 (CVSS 7.0), an actively exploited EoP in Windows Ancillary Function Driver for WinSock, and CVE-2026-62832 (CVSS 7.8), a publicly known flaw that, combined with the first, could enable full system compromise. Also flagged are CVE-2026-62878 (CVSS 9.8), a wormable RCE in Windows DNS Server, and CVE-2026-62815 (CVSS 9.8), an unauthenticated RCE in Microsoft's QUIC implementation. Elevation of privilege bugs dominate, accounting for 180 of the total CVEs. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What are the highest priority CVEs in Microsoft's August Patch Tuesday? The top priority is CVE-2026-68820 (CVSS 7.0), an actively exploited elevation-of-privilege zero-day in Windows Ancillary Function Driver for WinSock requiring no user interaction. Paired with CVE-2026-62832 (CVSS 7.8), a publicly known flaw, an attacker can escalate from initial foothold to full system compromise. CVE-2026-62878 (CVSS 9.8), a wormable RCE in Windows DNS Server, is also flagged for urgent patching. _Teams triaging Windows patches track newly disclosed CVEs and expert prioritization guidance on daily.dev._ ### Why has Microsoft's Patch Tuesday become so large recently? Microsoft has warned that elevated patch volumes are expected in the near term because the company, like other software vendors, is increasingly using AI tools to identify vulnerabilities in its products. July's release addressed 622 unique CVEs and August's covered 421, marking two consecutive months of significantly larger-than-typical updates. _Developers and security teams keeping pace with Microsoft's patching cadence follow the trend on daily.dev._ ### Is CVE-2026-62878 in Windows DNS Server wormable? Yes. CVE-2026-62878 is a stack-based buffer overflow RCE in Windows DNS Server with a CVSS score of 9.8 that requires no user interaction, making it wormable. Security researchers recommend testing and deploying the patch quickly, especially on Internet-facing DNS servers, despite Microsoft's assessment that exploitation is less likely. _Security engineers responsible for DNS infrastructure stay ahead of critical advisories like this on daily.dev._ ## Similar posts on daily.dev - [Microsoft Patches 83 CVEs in March Update](https://daily.dev/posts/microsoft-patches-83-cves-in-march-update-vqfajqpoo) · Dark Reading · 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 - [June Patch Tuesday marks a ‘new normal’ with over 200 CVEs, 32 rated ‘critical’](https://daily.dev/posts/june-patch-tuesday-marks-a-new-normal-with-over-200-cves-32-rated-critical--6lobpibpn) · CSO Online · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#microsoft](https://daily.dev/tags/microsoft), [#zero-day](https://daily.dev/tags/zero-day) [View this post on daily.dev](https://daily.dev/posts/microsoft-s-patch-tuesday-deluge-continues-with-august-updates-votdxsvgb) ```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's Patch Tuesday Deluge Continues With August Updates","url":"https://daily.dev/posts/microsoft-s-patch-tuesday-deluge-continues-with-august-updates-votdxsvgb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/microsoft-s-patch-tuesday-deluge-continues-with-august-updates-votdxsvgb"},"datePublished":"2026-08-11T21:58:44.327Z","dateModified":"2026-08-12T00:51:01.571Z","description":"Microsoft's August Patch Tuesday addresses 421 unique CVEs, including two zero-days and 44 critical-severity vulnerabilities. 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Paired with CVE-2026-62832 (CVSS 7.8), a publicly known flaw, an attacker can escalate from initial foothold to full system compromise. CVE-2026-62878 (CVSS 9.8), a wormable RCE in Windows DNS Server, is also flagged for urgent patching. Teams triaging Windows patches track newly disclosed CVEs and expert prioritization guidance on daily.dev."}},{"@type":"Question","name":"Why has Microsoft's Patch Tuesday become so large recently?","acceptedAnswer":{"@type":"Answer","text":"Microsoft has warned that elevated patch volumes are expected in the near term because the company, like other software vendors, is increasingly using AI tools to identify vulnerabilities in its products. July's release addressed 622 unique CVEs and August's covered 421, marking two consecutive months of significantly larger-than-typical updates. Developers and security teams keeping pace with Microsoft's patching cadence follow the trend on daily.dev."}},{"@type":"Question","name":"Is CVE-2026-62878 in Windows DNS Server wormable?","acceptedAnswer":{"@type":"Answer","text":"Yes. CVE-2026-62878 is a stack-based buffer overflow RCE in Windows DNS Server with a CVSS score of 9.8 that requires no user interaction, making it wormable. Security researchers recommend testing and deploying the patch quickly, especially on Internet-facing DNS servers, despite Microsoft's assessment that exploitation is less likely. Security engineers responsible for DNS infrastructure stay ahead of critical advisories like this on daily.dev."}}]} ```