January 2026 Tuesday Update — Windows Server 2022 security summary
This month's cumulative update includes fixes for 3 critical RCEs and a privilege escalation fix that was exploited early.
This month's cumulative update includes fixes for 3 critical RCEs and a privilege escalation fix that was exploited early.
Update rollout on Domain Controller and RDS servers should be completed within 48 hours. After updating, verify the build number with winver.
Stack-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over an adjacent network.
Integer overflow or wraparound in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.