CVE-2025-7775
Citrix NetScaler Memory Overflow Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2025-08-26. Federal due date: 2025-08-28.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
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
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Citrix | Netscaler Application Delivery Controller | from 12.1 before 12.1-55.330 from 13.1 before 13.1-37.241 from 13.1 before 13.1-59.22 from 14.1 before 14.1-47.48 |
| Citrix | Netscaler Gateway | from 13.1 before 13.1-59.22 from 14.1 before 14.1-47.48 |