GoKawiilMicrosoft's October 2026 Patch Tuesday fixes record 1,413 Windows security flaws
Microsoft's October 2026 Patch Tuesday update addressed 1,413 security vulnerabilities, the highest monthly total the company has ever released and more than it patched in any entire previous year. Windows accounted for 1,102 of the fixes, with Office, SharePoint Server, SQL Server, and developer tools making up the rest. The release also closed three actively exploited or publicly known zero-day flaws affecting Windows Shell, .NET Framework, and MessagePack-CSharp.