Apple macOS WindowServer Excessive Iteration Denial-of-Service Vulnerability (CVE-2025-43401)

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Apple macOS.

Authentication is not required to exploit this vulnerability.

The specific flaw exists within the WindowServer component.

The issue results from the lack of proper validation of user-supplied data, which can result in an excessively long loop.

An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

I am one of the editors here at www.systemtek.co.uk I am a UK based technology professional, with an interest in computer security and telecoms.