Microsoft's Record-Breaking October 2026 Patch Tuesday Fixes 1,411 Flaws, Including 3 Zero-Days
Microsoft's October 2026 Patch Tuesday addressed a record-breaking 1,411 security vulnerabilities, including 70 critical flaws and 3 zero-days, one of which is actively exploited in attacks. The patches cover Windows, Office, Exchange Server, SQL Server, Hyper-V, Skype for Business, Microsoft Defender, .NET Framework, Visual Studio, and Microsoft's cloud services. Organizations and Windows users are urged to prioritize security updates.4 sourcesSee all sources