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Microsoft September 2025 Patch Tuesday fixes 81 flaws, two zero-days

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Today is Microsoft's September 2025 Patch Tuesday, which includes security updates for 81 flaws, including two publicly disclosed zero-day vulnerabilities.

This Patch Tuesday also fixes nine "Critical" vulnerabilities, five of which are remote code execution vulnerabilities, 1 is information disclosure, and 2 are elevation of privileges.

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

41 Elevation of Privilege Vulnerabilities

2 Security Feature Bypass Vulnerabilities

22 Remote Code Execution Vulnerabilities

16 Information Disclosure Vulnerabilities

3 Denial of Service Vulnerabilities

1 Spoofing Vulnerabilities

When BleepingComputer reports on the Patch Tuesday security updates, we only count those released on Patch Tuesday.

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