CVE-2025-6543
Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
⚠ KEVEPSS 1.1%
Description
Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service. NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.
How to fix CVE-2025-6543
No package mapping is available — consult the references below for vendor-specific guidance.
Is CVE-2025-6543 being exploited?
Yes — CVE-2025-6543 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (0)
No package mapping in OSV.