The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent alert following the addition of a critical Citrix NetScaler vulnerability—CVE-2025-6543—to its Known Exploited Vulnerabilities (KEV) Catalog, citing evidence of active exploitation in the wild. Vulnerability Details CVE-2025-6543 is a buffer overflow vulnerability affecting Citrix NetScaler ADC and NetScaler Gateway appliances when configured as a Gateway […]
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