A critical vulnerability in Citrix NetScaler, tracked as CVE-2025-6543, has been exploited by hackers to breach organizations in the Netherlands, leading to remote code execution and operational disruptions. The NCSC warns organizations to update their systems and provides tools to detect signs of compromise. #CVE-2025-6543 #CitrixNetScaler #DutchCyberattacks
Keypoints
- The vulnerability CVE-2025-6543 affects multiple versions of Citrix NetScaler ADC and Gateway.
- Hackers exploited this zero-day flaw to gain remote control over targeted systems in the Netherlands.
- Organizations are advised to upgrade to the latest software versions and terminate active sessions.
- The NCSC recommends scanning for suspicious files and has released a detection script on GitHub.
- The attack has caused severe operational disruptions, notably impacting the Dutch Public Prosecution Service.