172 Vulnerabilities Fixed in Microsoft’s Last Windows 10 Patch

In October 2025, Microsoft released its final Windows 10 Patch Tuesday update, addressing 172 vulnerabilities, including multiple zero-day flaws and critical remote code execution issues. This marks the official end of mainstream support for Windows 10, making the update a pivotal milestone in cybersecurity history.

Overview of October 2025 Patch Tuesday

Microsoft’s October 2025 Patch Tuesday is one of the largest in recent memory, with 172 CVEs resolved. The update includes:

• Up to six zero-day vulnerabilities, some actively exploited.
• Eight critical flaws, primarily remote code execution and privilege escalation.
• Major fixes across Windows, Office, Exchange, and Azure components.

Breakdown of Vulnerabilities

The vulnerabilities addressed span multiple categories:

• Elevation of Privilege: 80 patches (47%).
• Remote Code Execution: 31 patches (18%).
• Information Disclosure: 28 patches (16%).
• Other categories include security feature bypass and denial of service.

Windows 10 End of Support

This release is historically significant as it represents the final Patch Tuesday for Windows 10. Organizations relying on Windows 10 must now transition to supported platforms like Windows 11 to maintain security compliance.

Impact on Enterprises

Enterprises face urgent patching requirements due to the scale of vulnerabilities and the presence of actively exploited zero-days. Cybersecurity experts emphasize that timely updates are critical to defend against state-sponsored actors and cybercriminals.

Conclusion

Microsoft’s October 2025 Patch Tuesday not only closes the chapter on Windows 10 but also highlights the evolving threat landscape. With 172 vulnerabilities fixed, this update underscores the importance of proactive patch management in modern IT environments.