CVE-2026-62713

This Windows bug is in a file-related component called the Cloud Files Mini Filter Driver. If a local user can feed it malicious data in the right way, the bug can overflow memory and let that user gain higher privileges than they should have. Think of it like a small security flaw in a door lock: a person already inside your building can potentially force open the restricted room.

This matters if your business runs Windows 10, Windows 11, or Windows Server 2019/2022/2025 with the Windows Cloud Files component/driver in use. It specifically requires an authenticated local user (so the main risk is from people who already have an account on the machine), and it has no need for clicks or user interaction once the attacker has credentials. The practical risk depends on whether an attacker can reach the Cloud Files driver’s processing path with malicious input—so focus on systems where untrusted or semi-trusted users can log on.

This should be treated as high urgency because it is a local privilege-escalation bug (it turns an authenticated local user into higher-privilege access), which can quickly enable full system compromise. Even though publicly available exploit code wasn’t found in the records here, security reporting indicates active interest (Lazarus group) and Microsoft has provided fixes—so you should patch on an accelerated schedule.