PRIORITY: CRITICAL CVE-2023-27351 affects PaperCut NG/MF deployments globally and permits unauthenticated remote code execution through a flaw in the SecurityRequestFilter class. The vulnerability enables threat actors to bypass authentication controls entirely, granting access to print management systems that typically contain sensitive document metadata and user credentials. Organizations running affected versions prior to patch deployment represent high-value targets for lateral network movement and data exfiltration. Estimated affected systems: 30,000+ instances across enterprise networks.