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

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

by | Nov 11, 2025 | ctx_adc, ctx_workspace, WARNING

Severity – Medium

Article Id : CTX695486

Created Date : 11-11-2025 10:19

Last Modified Date : 11-11-2025 12:40

Article Record Type : Security Bulletin

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

Note: NetScaler ADC and NetScaler Gateway versions 12.1 and 13.0 are now End Of Life (EOL) and are vulnerable. Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities. 

Additional Note: Secure Private Access on-prem or Secure Private Access Hybrid deployments using NetScaler instances are also affected by the vulnerabilities. Customers need to upgrade these NetScaler instances to the recommended NetScaler builds to address the vulnerabilities. 

This bulletin only applies to customer-managed NetScaler ADC and NetScaler Gateway. Cloud Software Group upgrades the Citrix-managed cloud services and Citrix-managed Adaptive Authentication with the necessary software updates.

Details

NetScaler ADC and NetScaler Gateway are affected by the vulnerability mentioned below:


CVE-ID 		Description Pre-conditionsCWECVSSv4
CVE-2025-12101Cross-Site Scripting (XSS)
NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy)ORAAA 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 .*