Microsoft Addresses 973 Vulnerabilities in September Security Update
Microsoft released its September monthly security updates on September 8, 2026, addressing a total of 973 vulnerabilities tracked under CVE identifiers. The company also resolved four additional flaws affecting third-party software.
The update was published on the second Tuesday of the month, known as Patch Tuesday. It covers a wide range of products including Windows, Office, SQL Server, Azure, Microsoft Dynamics, SharePoint Server, and multiple development tools.
Impact analysis shows 258 vulnerabilities permit remote code execution, while 438 allow privilege escalation. Additional categories include 173 information disclosure issues, 56 denial-of-service flaws, 19 security feature bypass problems, 16 spoofing vulnerabilities, and 13 memory-related weaknesses.
Severity distribution indicates 113 vulnerabilities rated Critical, exceeding the 100 mark, with the remaining 860 classified as Important. Some of the patched flaws have already been confirmed as actively exploited in the wild.
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