Citrix Urges Immediate Updates for Critical NetScaler Vulnerabilities
The Hacker News
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Contributed by: Bill Russell
Summary
Citrix has released emergency patches for a critical vulnerability (CVE-2025-6543) in its NetScaler ADC, which has a CVSS score of 9.2 and is actively being exploited. The memory overflow issue can lead to unauthorized control and denial-of-service, particularly impacting NetScaler ADC and Gateway configurations. Healthcare professionals using affected systems are urged to upgrade immediately, as no workarounds exist, and the risk of exploitation in unpatched environments is significant. This announcement follows a recent vulnerability (CVE-2025-5777), underscoring ongoing security challenges that require prompt attention in healthcare technology systems.
