Citrix Products Denial of Service Vulnerability
A vulnerability was identified in Citrix Products. A remote user can exploit this vulnerability to trigger denial of service condition on the targeted system.
Note:
CVE-2025-6543 is being exploited in the wild. Memory 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. Hence, the risk level is rated as High Risk.
RISK: High Risk
TYPE: Operating Systems – Networks OS

Impact
- Denial of Service
System / Technologies affected
- NetScaler ADC and NetScaler Gateway 14.1 before 14.1-47.46
- NetScaler ADC and NetScaler Gateway 13.1 before 13.1-59.19
- NetScaler ADC 13.1-FIPS and NDcPP before 13.1-37.236-FIPS and NDcPP
Solutions
Before installation of the software, please visit the vendor web-site for more details.
Apply fixes issued by the vendor:
Vulnerability Identifier
Source
Related Link
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