By Qualys
Publication Date: 2026-01-13 21:34:00
Starting the year on a security-first note, Microsoft’s January 2026 Patch Tuesday resolves several vulnerabilities that could impact enterprise environments. Here’s a quick breakdown of what you need to know.
Microsoft Patch Tuesday for January 2026
This month’s release addresses 115 vulnerabilities, including eight critical and 106 important-severity vulnerabilities.
In this month’s updates, Microsoft has addressed three zero-day vulnerabilities. One of them was exploited, and two are publicly disclosed.
Microsoft addressed one vulnerability in Microsoft Edge (Chromium-based) that was patched earlier this month.
Microsoft Patch Tuesday, January edition, includes updates for vulnerabilities in Windows Ancillary Function Driver for WinSock, Windows Client-Side Caching (CSC) Service, Windows NTFS, Windows NTLM, Windows Remote Assistance, Windows Remote Procedure Call, Windows Server Update Service, Windows Cloud…