Cyber: Microsoft February 2026 Patch Tuesday Fixes 6 Zero-days, 58 Flaws

Today is Microsoft's February 2026 Patch Tuesday with security updates for 58 flaws, including 6 actively exploited and three publicly disclosed zero-day vulnerabilities.

This Patch Tuesday also addresses five "Critical" vulnerabilities, 3 of which are elevation of privileges flaws and 2 information disclosure flaws.

The number of bugs in each vulnerability category is listed below:

When BleepingComputer reports on Patch Tuesday security updates, we only count those released by Microsoft today. Therefore, the number of flaws does not include 3 Microsoft Edge flaws fixed earlier this month.

As part of these updates, Microsoft has also begun to roll out updated Secure Boot certificates to replace the original 2011 certificates that are expiring in late June 2026.

"With this update, Windows quality updates include a broad set of targeting data that identifies devices and their ability to receive new Secure Boot certificates," explains Microsoft in the Windows 11 update notes.

"Devices will receive the new certificates only after they show sufficient successful update signals, which helps ensures a safe and phased rollout."

To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5077181 & KB5075941 cumulative updates and the Windows 10 KB5075912 extended security update.

This month's Patch Tuesday fixes six actively exploited vulnerabilities, three of which are publicly disclosed.

Microsoft classifies a zero-day flaw as publicly disclosed or actively exploited while no official fix is available.

Source: BleepingComputer