CVE-2025-7775
Description
Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
(OR)
NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or servicegroups bound with IPv6 servers
(OR)
NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with DBS IPv6 services or servicegroups bound with IPv6 DBS servers
(OR)
CR virtual server with type HDX
Summary dbcve.org
Memory overflow (likely buffer overflow) vulnerability in NetScaler ADC and Gateway when handling IPv6 traffic in specific configurations including Gateway/AAA virtual servers, LB virtual servers (HTTP/SSL/HTTP_QUIC) bound with IPv6 services, and CR virtual servers with HDX type. The overflow can lead to remote code execution or denial of service.
Mitigation
Apply Citrix-provided security patches for affected NetScaler ADC and Gateway versions (13.1, 14.1, 13.1-FIPS, NDcPP). Until patches are applied, consider disabling IPv6 on affected virtual servers or restricting access to minimize attack surface.