PHP2Shell: Critical RCE Vulnerabilities Affect a Large Majority of Web Servers
Update Oct 22 2026: New sections were added for “Observed Threat Activity and Indicators” and “Mitigations and Recommendations.”
Update Oct 22 2026: New sections were added for “Observed Threat Activity and Indicators” and “Mitigations and Recommendations.”
On Sept 27, Citrix released patches for two critical vulnerabilities being exploited in the wild. Based on current information, we confirm there has been no exposure or impact to LevelBlue or our clients. CISA has already added these vulnerabilities to the Known Exploited Vulnerabilities (KEV) list.