Microsoft has released its November 2025 Patch Tuesday, addressing 63 new vulnerabilities. The most critical is CVE-2025-62215, a Windows Kernel privilege escalation flaw that is confirmed to be actively exploited in the wild. The update also includes critical RCE flaws in Windows GDI+ and Microsoft Office.
Business Impact
An actively exploited privilege escalation flaw is a critical component of attack chains. Attackers who gain initial low-level access (e.g., via phishing) can use this zero-day to immediately gain full SYSTEM-level control of a machine, bypassing all security and deploying ransomware or spyware.
Why It Happened
The vulnerability is a race condition in the Windows Kernel. An attacker who can run code on a target machine can win this race to elevate their privileges, turning a minor intrusion into a full system compromise.
Recommended Executive Action
This is the top patching priority for the month. Direct IT operations to deploy the November Microsoft security updates immediately, focusing on workstations and servers to mitigate this actively exploited zero-day.
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