Please have a look and upgrade it ASAP if you or your customers are using Citrix NetScaler.
The detailed information as the following link.
Citrix Security Bulletin Alert CTX579459
Userlevel 7
+7
Userlevel 7
+5
Already patched ✌
Comment
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.