Security · October 23, 2026
Microsoft Patches 1,413 Windows Security Vulnerabilities in One Month Using AI
Microsoft has utilized artificial intelligence to scan for security vulnerabilities, resulting in a significant increase in its software updates. During the regular Patch Tuesday in October 2026, the technology giant set a new record by patching 1,413 vulnerabilities simultaneously within just one month. This drastic increase follows Microsoft's use of large language models to automatically identify code weaknesses across its products.
Among the 1,413 vulnerabilities patched in October 2026, the Windows operating system accounted for the majority of fixes. Microsoft highlighted three critical zero-day vulnerabilities among the thousands of patches, with one of them reportedly already being actively exploited by cybercriminals in the wild.
The surge in updates has overwhelmed IT teams across various companies. To assist system administrators in prioritizing the most urgent fixes, Microsoft introduced an experimental method called risk cohorts, which clusters vulnerabilities with similar risk characteristics.
Additionally, Microsoft issued an important warning regarding the lifespan of its operating systems. Starting next month, November 2026, Windows 11 version 24H2 and Windows 10 Enterprise LTSB 2016 will officially cease support and will no longer receive monthly security updates. Users are urged to update their operating system versions accordingly.