A vulnerability has been discovered in the Citrix Secure Access Client for Windows. Refer to below for further details:
Affected Versions
The following supported versions of Citrix Secure Access Client for Windows are affected:
Citrix Secure Access Client for Windows versions BEFORE 25.5.1.15
Disclaimer
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, 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 PAGE, YOU ACKNOWLEDGE THAT CLOUD SG SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. Cloud SG reserves the right to change or update the information on this page at any time. We accordingly recommend that you always view the latest version of this page. The information contained herein is being provided to you under the terms of your applicable customer agreement with Cloud SG, and may be used only for the purposes contemplated by such agreement. If you do not have such an agreement with Cloud SG, this information is provided under the cloud.com Terms of Use, and may be used only for the purposes contemplated by such Terms of Use.
Details
Citrix Secure Access Client for Windows contains a vulnerability mentioned below
CVE-ID
Description
Pre-conditions
CWE
CVSSv4
CVE-2025-0320
Local Privilege escalation allows a low-privileged user to gain SYSTEM privileges
Standard user access on local system
CWE-269: Improper Privilege Management
CVSS v4.0 Base Score: 8.5 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
What Customers Should Do
Cloud Software Group strongly urges customers of Citrix Secure Access Client for Windows to install the relevant updated versions as soon as possible:
Citrix Secure Access Client for Windows 25.5.1.15 and later releases
Acknowledgements
Cloud Software Group thanks Damien Foulde of Axians for working with us to protect Cloud Software Group customers.
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 14.1-43.56
NetScaler ADC and NetScaler Gateway 13.1 BEFORE 13.1-58.32
NetScaler ADC 13.1-FIPS and NDcPP BEFORE 13.1-37.235-FIPS and NDcPP
NetScaler ADC 12.1-FIPS BEFORE 12.1-55.328-FIPS
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.
Disclaimer
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, 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 PAGE, YOU ACKNOWLEDGE THAT CLOUD SG SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. Cloud SG reserves the right to change or update the information on this page at any time. We accordingly recommend that you always view the latest version of this page. The information contained herein is being provided to you under the terms of your applicable customer agreement with Cloud SG, and may be used only for the purposes contemplated by such agreement. If you do not have such an agreement with Cloud SG, this information is provided under the cloud.com Terms of Use, and may be used only for the purposes contemplated by such Terms of Use.
Details
NetScaler ADC and NetScaler Gateway contain the vulnerabilities mentioned below:
CVE ID
Description
Pre-conditions
CWE
CVSSv4
CVE-2025-5349
Improper access control on the NetScaler Management Interface
Access to NSIP, Cluster Management IP or local GSLB Site IP
CWE-284: Improper Access Control
CVSS v4.0 Base Score: 8.7(CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L)
CVE-2025-5777
Insufficient input validation leading to memory overread
NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
CWE-125: Out-of-bounds Read
CVSS v4.0 Base Score: 9.3(CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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 14.1-43.56 and later releases
NetScaler ADC and NetScaler Gateway 13.1-58.32 and later releases of 13.1
NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.235 and later releases of 13.1-FIPS and 13.1-NDcPP
NetScaler ADC 12.1-FIPS 12.1-55.328 and later releases of 12.1-FIPS
Additionally, we recommend running the following commands to terminate all active ICA and PCoIP sessions after all NetScaler appliances in the HA pair or cluster have been upgraded to the fixed builds.:
kill icaconnection -all
kill pcoipConnection -all
Please ensure that the formatting remains intact as you copy and paste these commands.
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.
Two vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). Refer below for further details.
NetScaler are affected is RDP-Proxy Feature is enabled and/or Kerberos Constrained Delegation is configured!
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 14.1-29.72
NetScaler ADC and NetScaler Gateway 13.1 BEFORE 13.1-55.34
NetScaler ADC 13.1-FIPS BEFORE 13.1-37.207
NetScaler ADC 12.1-FIPS BEFORE 12.1-55.321
NetScaler ADC 12.1-NDcPP BEFORE 12.1-55.321
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.
This bulletin only applies to customer-managed NetScaler ADC and NetScaler Gateway. Customers using Citrix-managed cloud services or Citrix-managed Adaptive Authentication do not need to take any action.
Summary
NetScaler ADC and NetScaler Gateway contain the vulnerabilities mentioned below
CVE ID
Description
Pre-requisites
CWE
CVSS
CVE-2024-8534
Memory safety vulnerability leading to memory corruption and Denial of Service
The appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled ORThe appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) ORThe appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CVSS v4.0 Base Score: 8.4(CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:L)
CVE-2024-8535
Authenticated user can access unintended user capabilities
The appliance must be configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) with KCDAccount configuration for Kerberos SSO to access backend resourcesOR The appliance must be configured as aAuth Server (AAA Vserver) with KCDAccount configuration for Kerberos SSO to access backend resources
CWE-440: Expected Behavior Violation
CVSS v4.0 Base Score: 5.8(CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H)
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 14.1-29.72 and later releases
NetScaler ADC and NetScaler Gateway 13.1-55.34 and later releases of 13.1
NetScaler ADC 13.1-FIPS 13.1-37.207 and later releases of 13.1-FIPS
NetScaler ADC 12.1-FIPS 12.1-55.321 and later releases of 12.1-FIPS
NetScaler ADC 12.1-NDcPP 12.1-55.321 and later releases of 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-2024-8534:
Customers can determine if they have an appliance configured as one of the following by inspecting their ns.conf file for the specified strings
A Gateway (VPN Vserver) with the RDP Feature enabled, enable ns feature.*rdpproxy add vpn vserver
A Gateway (VPN Vserver) with an RDP Proxy Server Profile created and set to the Gateway (VPN Vserver) add rdp serverprofile <RDP_server_name> add vpn vserver <vserver_name> -rdpServerProfileName <RDP_server_name>
An Auth Server (AAA Vserver) with the RDP Feature enabled. enable ns feature.*rdpproxy add authentication vserver
CVE-2024-8535: Customers can determine if they have an appliance configured as one of the following by inspecting their ns.conf file for the specified strings
A Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) with KCDAccount configuration for Kerberos SSO to access backend resources add aaa kcdaccount
An Auth Server (AAA Vserver) with KCDAccount configuration for Kerberos SSO to access backend resources add aaa kcdaccount
In addition, upon upgrading to the fixed version, customers must perform the shell commands mentioned below: nsapimgr_wr.sh -ys call=ns_aaa_flush_kerberos_tickets
Note: In case of High Availability (HA) or Cluster setup of the NetScaler appliances, the above operation should be performed after upgrading all the appliances.
A vulnerability has been discovered in the customer-managed ShareFile storage zones controller which, if exploited, could allow an unauthenticated attacker to remotely compromise the customer-managed ShareFile storage zones controller.
This vulnerability affects all currently supported versions of customer-managed ShareFile storage zones controller before version 5.11.24.
This bulletin only applies to customer-managed ShareFile storage zones controllers. Customers using ShareFile-managed storage zones in the cloud do not need to take any action.
The issue has been given the following identifier:
CVE ID
Affected Products
Description
Pre-requisites
CWE
CVSS
CVE-2023-24489
Citrix Content Collaboration
Improper resource control allows unauthenticated remote compromise
Network access to the ShareFile storage zones controller
All customer-managed ShareFile storage zones controllers versions prior to the latest version 5.11.24 have been blocked to protect our customers. Customers will be able to reinstate the storage zones controller once the update to 5.11.24 is applied.
Customers should shut down any machine that was running an affected version of the storage zones controller software.
Citrix has identified an isolated issue in which some customers experienced a crash condition after upgrading to the current build with HTTP/2 enabled.
What Product is Affected?
NetScaler appliance upgraded to version NS13.1 Build 45.63 or NS13.0 Build 90.11
*No other versions are impacted by this HTTP/2 issue.
Is there a workaround or fix?
Workaround: Disable http2 in the HTTP profile bound to the virtual server.
Fix: Engineering is working on a code fix and will update the ETA of the next build as soon as possible.
How to verify if http2 is enabled?
Run the following command from the CLI and verify if http2Direct Is reported as enabled.
> show run | grep http2
Example of output if enabled:
> set ns httpProfile <name of httpprofile> -http2 ENABLED -http2Direct ENABLED
Example of output if not enabled:
> set ns httpProfile <name of httpprofile> -http2 DISABLED -http2Direct DISABLED
How to disable http2 if enabled?
> set ns httpProfile <name of the httpprofile> -http2 DISABLED -http2Direct DISABLED
