CVE-2026-62783

This is a security flaw in a built-in Windows component that handles remote access connections. If someone already has a valid, low-permission login to the machine, they may be able to exploit a bug in how Windows processes connection data and end up with full control of that computer—like turning a “restricted employee badge” into an “admin master key.”

This matters if you run Windows 10 or Windows 11 on workstations, or Windows Server 2019/2022/2025 for servers in your business. The risk is primarily for machines where an attacker can obtain low-privilege credentials, since the flaw requires an authenticated (logged-in) user with limited permissions.

Because it’s reachable in default configuration, you should treat it as a real local privilege escalation risk on exposed devices that can be logged into.

This is RED because it allows an authenticated low-privileged user to gain full control of the local system, and the issue is reachable in default configuration. While there’s no clear, dated public claim of exploitation in the provided reporting, the Windows patch has been released and press attention is specifically tied to this update.

Act now to eliminate the risk on all affected Windows versions before attackers can leverage any local access to accounts.