W3 Total Cache Vulnerability Exposes Over 1 Million WordPress Sites to RCE

A critical remote code execution vulnerability, tracked as CVE-2025-9501, has been identified in the W3 Total Cache plugin for WordPress, affecting over one million active installations. The flaw allows unauthenticated command injection, enabling attackers to execute arbitrary code on vulnerable websites. A proof-of-concept exploit has been publicly released, increasing the urgency for site owners to apply security updates.