Critical vBulletin Vulnerability Guide 2025
The sources describe a critical unauthenticated remote code execution vulnerability in vBulletin forum software, tracked as CVE-2025-48827 and CVE-2025-48828, which is actively being exploited. This vulnerability allows attackers to gain full control over affected servers without requiring login credentials, posing a significant risk of data breaches and service disruptions. The text provides a technical analysis of the exploit methodology, identifies the affected versions (5.0.0 through 6.0.3), and outlines immediate response actions and long-term security recommendations to mitigate the threat. It also highlights how IT technicians can assist organizations in assessing, patching, and hardening their vBulletin installations against this and future vulnerabilities.
