
Over 2,100 Citrix NetScaler servers continue to face substantial vulnerabilities, posing an active threat to cybersecurity despite the availability of patches. Identified as CVE-2025-5777 and CVE-2025-6543, these vulnerabilities have been exploited since mid-June 2025, allowing unauthorized access through authentication bypasses and session token theft. According to cybersecurity experts at ReliaQuest, scanning activities related to these vulnerabilities began on June 19,