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Microsoft releases Windows 10 KB5122878 extended security update
September 8, 2026 · BleepingComputer · Severity: LOW
Microsoft has released the Windows 10 KB5122878 extended security update for September 2026. The update addresses several security vulnerabilities in the Windows operating system and provides quality improvements. This is part of Microsoft ongoing Patch Tuesday release cycle and applies to supported Windows 10 versions.
Key Takeaways
- Security patches address multiple CVEs across affected product lines
- Critical and high-severity vulnerabilities require prioritized deployment
- Review full advisory for product-specific patch guidance and mitigations