High · published June 17, 2025
CVSS calls it high at 7.5. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.
🚨 A clever input validation flaw is letting attackers exploit your NetScaler setup—this is a gateway to chaos! 🔥 Imagine a restaurant where patrons can place orders without being checked on dietary restrictions. A simple oversight in the kitchen could lead to a disastrous food allergy incident. Here, insufficient input validation is just like that chaotic kitchen, accepting anything and opening the door to dangerous memory overreads. This vulnerability can lead to unauthorized access to sensitive data or system memory, putting user privacy and security in jeopardy. Attackers could potentially sniff out confidential information, making this not just a breach, but a full-on memory heist! The consequences could be absolutely devastating, especially in environments relying on VPN or proxy services.
Imagine a restaurant where patrons can place orders without being checked on dietary restrictions. A simple oversight in the kitchen could lead to a disastrous food allergy incident. Here, insufficient input validation is just like that chaotic kitchen, accepting anything and opening the door to dangerous memory overreads. CVE-2025-5777 involves insufficient input validation on the NetScaler when acting as a Gateway or AAA virtual server. This flaw allows attackers to trigger a memory overread, potentially exposing sensitive data.
This vulnerability can lead to unauthorized access to sensitive data or system memory, putting user privacy and security in jeopardy. Attackers could potentially sniff out confidential information, making this not just a breach, but a full-on memory heist! The consequences could be absolutely devastating, especially in environments relying on VPN or proxy services. Immediately upgrade your NetScaler to the latest version that includes the security patch. Review your configurations to ensure that no unnecessary services are exposed, and consider implementing stricter input validation mechanisms to safeguard against similar vulnerabilities. 🚀 This is fixable! Follow these steps, and you’ll be back to being the security superhero your organization needs! 🦸♂️
| Product | Versions | Fixed in |
|---|---|---|
| citrix/netscaler_application_delivery_controller | ≥ 12.1, < 12.1-55.328 | 12.1-55.328 |
| citrix/netscaler_application_delivery_controller | ≥ 13.1, < 13.1-37.235 | 13.1-37.235 |
| citrix/netscaler_application_delivery_controller | ≥ 13.1, < 13.1-37.235 | 13.1-37.235 |
| citrix/netscaler_application_delivery_controller | ≥ 13.1, < 13.1-58.32 | 13.1-58.32 |
| citrix/netscaler_application_delivery_controller | ≥ 14.1, < 14.1-43.56 | 14.1-43.56 |
| citrix/netscaler_gateway | ≥ 13.1, < 13.1-58.32 | 13.1-58.32 |
| citrix/netscaler_gateway | ≥ 14.1, < 14.1-43.56 | 14.1-43.56 |