NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-3055 and CVE-2026-4368

• NetScaler ADC and NetScaler Gateway
• The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities: CVE-2026-3055: NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-60.58 NetScaler ADC and NetScaler Gateway 13.1 BEFORE 13.1-62.23 NetScaler ADC FIPS and NDcPP BEFORE 13.1-37.262 CVE-2026-4368: NetScaler ADC and NetScaler Gateway 14.1-66.54 Note: CVE-2026-4368 only impacts build version 14.1-66.54.

CVE 2026-3055 was identified internally through our ongoing security reviews and broader efforts to strengthen the security of the product. 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 14.1-60.58 NetScaler ADC and NetScaler Gateway 14.1-66.59 and later releases NetScaler ADC and NetScaler Gateway 13.1-62.23 and later releases of 13.1 NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1.37.262 and later releases of 13.1-FIPS and 13.1-NDcPP Note: Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities. CVE-2026-3055 : Customers can determine if they have an appliance configured as a SAML IDP Profile by inspecting their NetScaler Configuration for the specified string: add authentication samlIdPProfile .* CVE-2026-4368 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 .* The information on this page is being provided to you on an "AS IS" and "AS-AVAILABLE" basis. The issues described on this page may or may not impact your system(s). Cloud Software Group Holdings, Inc. and its subsidiaries (collectively, "Cloud SG") make no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. BY ACCESSING THIS PAG

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

1. Aug 20, 2026 at 7:02 PM UTC
   • Added affected products: The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities: CVE-2026-3055: NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-60.58 NetScaler ADC and NetScaler Gateway....
   • Removed affected products: The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities: CVE-2026-3055: NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-60.58 NetScaler ADC and NetScaler....
   • Added fixed versions: NetScaler ADC and NetScaler Gateway 13.1-62.23 and later releases of 13.1, NetScaler ADC and NetScaler Gateway 14.1-66.59 and later releases.
   • Removed fixed versions: NetScaler ADC and NetScaler Gateway 13.1-62.23 and later releases of 13.1, NetScaler ADC and NetScaler Gateway 14.1-66.59 and later releases.
   • The vendor changed its remediation guidance.

1. Mar 27, 2026 at 10:47 AM UTC
   Published by Citrix

   The publication date reported by the vendor.

2. Aug 20, 2026 at 6:53 PM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Sep 13, 2026 at 4:50 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.