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  • Insights

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2025-12101

Gedeon Richemond

< 1 min read

All Insights

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2025-12101

Description of Problem

A vulnerability has been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). Refer below for further details.

 

Affected Versions

The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities:

  • NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-56.73
  • NetScaler ADC and NetScaler Gateway 13.1 BEFORE 13.1-60.32
  • NetScaler ADC 13.1-FIPS and NDcPP BEFORE 13.1-37.250-FIPS and NDcPP
  • NetScaler ADC 12.1-FIPS and NDcPP BEFORE 12.1-55.333-FIPS and NDcPP

 

Summary


CVE-ID 		 Description  Pre-conditions CWE CVSSv4
CVE-2025-12101 Cross-Site Scripting (XSS)
NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy)

OR

AAA virtual server

 CWE-79: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) 5.9
(CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L)

 

What Customers Should Do

Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.

  • NetScaler ADC and NetScaler Gateway 14.1-56.73 and later releases
  • NetScaler ADC and NetScaler Gateway 13.1-60.32 and later releases of 13.1
  • NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.250 and later releases of 13.1-FIPS and 13.1-NDcPP
  • NetScaler ADC 12.1-FIPS and 12.1-NDcPP 12.1-55.333 and later releases of 12.1-FIPS and 12.1-NDcPP

Note: NetScaler ADC and NetScaler Gateway versions 12.1 and 13.0 are now End Of Life (EOL) and no longer supported. Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.

 

CVE-2025-12101:

Customers can determine if they have an appliance configured as one of the following by inspecting their NetScaler Configuration for the specified strings

  • An Auth Server (AAA Vserver):
    add authentication vserver .*
  • A Gateway (VPN Vserver,  ICA Proxy, CVPN, RDP Proxy) :
    add vpn vserver .*

 

More Information

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX695486&articleTitle=NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2025_12101

 

For assistance from the Kraft Kennedy team, please contact us.