Patch Tuesday, January 2026 Edition

Microsoft today issued patches to plug at least 113 security holes in its various Windows operating systems and supported software. Eight of the vulnerabilities earned Microsoft's most-dire "critical" rating, and the company warns that attackers are already exploiting one of the bugs fixed today.

• ▸High societal impact — significant public interest implications.
• ▸Elevated risk profile — potential security or legal consequences.