Microsoft’s August 2026 Patch Tuesday update addresses significant security vulnerabilities across its software, including Windows, Office, and Exchange Server. This release patches 398 vulnerabilities, with 42 classified as critical and several flaws potentially allowing remote code execution and account takeover without user interaction. Notably, one Windows Winsock flaw is actively being exploited by attackers.<\/p>\n
Among the vulnerabilities addressed, over 200 pertain to various Windows versions. Although support for Windows 10 officially ended in October 2025, users enrolled in the Extended Security Updates (ESU) program will continue to receive support until October 2027.<\/p>\n
The most critical flaw in the August update is a use-after-free vulnerability in the Windows auxiliary function driver for Winsock (CVE-2026-68820). This part of the update enables attackers to gain elevated privileges and execute code with system-level permissions when combined with another existing remote code execution vulnerability.<\/p>\n
Eighteen critical vulnerabilities have been identified in Windows, including a buffer overflow vulnerability in the Windows DNS server (CVE-2026-62878) that could allow code execution without user interaction. Other notable vulnerabilities include those in Windows Deployment Services and Quick UDP Internet Connections (QUIC), further enhancing the potential for exploitation by attackers.<\/p>\n
In addition to addressing Windows vulnerabilities, Microsoft remedied 128 vulnerabilities in its Office suite. Notably, this included 22 critical remote code execution vulnerabilities, which can often be exploited through the Office application preview pane without the user needing to open attached files.<\/p>\n
Seven vulnerabilities were also patched in Exchange Server, including a critical elevation of privilege vulnerability (CVE-2026-62911) that was successfully demonstrated at a hacking competition, allowing attackers to control email accounts without user authentication.<\/p>\n
Moreover, Edge 151.0.4129.78 received an update, fixing 41 vulnerabilities. Microsoft urges users to install these updates to safeguard their systems against exploitation.<\/p>\n
For details on the vulnerabilities and their respective CVE records, you can find more information here: CVE-2026-68820<\/a>, CVE-2026-62878<\/a>, CVE-2026-62911<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" Microsoft’s August 2026 Patch Tuesday update addresses significant security vulnerabilities across its software, including Windows, Office, and Exchange Server. This release patches 398 vulnerabilities, with 42 classified as\u2026<\/p>\n","protected":false},"author":0,"featured_media":11401,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11400","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/posts\/11400","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/comments?post=11400"}],"version-history":[{"count":0,"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/posts\/11400\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/media\/11401"}],"wp:attachment":[{"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/media?parent=11400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/categories?post=11400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cheapwindowsvps.com\/blog\/wp-json\/wp\/v2\/tags?post=11400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}