BGP Routing and RHI Functionality in NetScaler

This article provides information about BGP routing in NetScaler and some of the sample BGP configurations. It gives a brief overview of the RHI functionality. Route Health Injection RHI The primary purpose of dynamic routing in NetScaler is to communicate the state or health of VIPs to the...

The Non-Maskable Interrupt Button on a NetScaler Appliance

This article contains information about using Non-Maskable Interrupt NMI button on a NetScaler appliance. Requirements Review the NetScaler MPXHardware Platforms and NetScaler SDX Hardware Platforms page, to verify the NetScaler platforms that have the NMI button. NMI Button If the NetScaler...

WEM - Exception: Failed to determine site for agent machine

WEM Agent does not get registered. Agent log 4:41:56 PM Exception - VuemAgentServiceConfigurationHelper.UpdateConfigurationSet : Failed to determine site for agent machine. 4:41:56 PM Exception - VuemAgentServiceConfigurationHelper.ReadRepositorySettings : Error happened while getting global...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that may allow malicious code running in a PV guest VM to compromise the host and malicious privileged code running in an HVM guest VM to crash the host. These vulnerabilities affect all currently...

Enabling WPF Rendering for Citrix HDX on Multi-Session VDAs

Overview Windows Presentation Foundation WPF applications can leverage GPU acceleration in Citrix Virtual Apps and Desktops CVAD environments running Windows Multi-session OS. By enabling WPF rendering on the server’s GPU, this reduces CPU load and improves graphics performance for WPF...

Understanding the Citrix Telemetry Service

Understanding the Citrix Telemetry Service The Citrix Telemetry Service plays a crucial role in maintaining and optimizing the user experience of Citrix products. This feature is designed to collect diagnostic, performance, and usage data from Citrix products back to Citrix. The information...

Citrix XenServer Multiple Security Updates

Description of Problem A number of vulnerabilities have been identified within Citrix XenServer that could, if exploited, allow a malicious administrator of a guest VM to crash the host and, for some XenServer versions, allow a remote attacker to compromise the host. The following vulnerabilities...

How to check MAC address for interfaces of SDX device

To find the mac address for SDX device interface...

WEM Agents are not listed in Console and failed to register

WEM Agents are not listed in Console and failed to register, Citrix WEM Agent Host Service Debug.log and Event Logs shows the below exception. ConfigurationDataSourcesHelper.CheckAgentBrokerServiceClient : System.ServiceModel.Security.SecurityNegotiationException : The caller was not authenticate...

ADC: ICMP Timestamp Request Remote Date Disclosure Vulnerability (CVE-1999-0524)

Vulnerability scan is flagging NetScaler device as vulnerable to ICMP Timestamp Request Remote Date Disclosure Vulnerability CVE-1999-0524 even when an ACL already exists to block ICMP type 13 traffic...

Netscaler CVE & Security Guide

Introduction Begin with an introduction to the main issue topic, explaining its significance and how the hub article serves as a central resource for related information. Overview of the Issue Provide a brief yet comprehensive overview of the issue, outlining the common challenges and key points...

Citrix Health Assistant - Troubleshoot VDA Registration and Session Launch

Citrix Virtual Apps and Desktops, formerly XenDesktop, fits the enterprise need to bring both VDI and apps into a user-centric experience. Citrix Virtual Apps, formerly XenApp, fits the enterprise need to bring legacy apps into a cloud management environment. Citrix Health Assistantv1.8.3.71...

CVE-2017-17382 - TLS Padding Oracle Vulnerability in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway

Description of Problem A vulnerability has been identified in the Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway Packet Engine that could allow an attacker to exploit the appliance to decrypt TLS traffic. This vulnerability has been assigned the following CVE:...

App Layering/Unidesk: Boot failure after windows updates cmimcext.sys

Windows updates causes server to fail boot with error message file missing cmimcext.sys. BSOD with0xc000000f stop code. This can apply to a newly imported OS layer or to a new version of an existing OS layer...

CVE-2016-2789 - Persistent Cross-Site Scripting Vulnerability in Citrix XenMobile Server 10.x Web User Interface

Description of Problem A Cross-Site Scripting XSS vulnerability has been identified in XenMobile Server 10.x. This vulnerability could potentially be used to execute malicious client-side script in the same context as legitimate content from the web server; if this vulnerability is used to execut...

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2024-5491 and CVE-2024-5492

Description of Problem Two vulnerabilities have been discovered in NetScaler ADC formerly Citrix ADC and NetScaler Gateway formerly Citrix Gateway. Refer to below for further details: Affected Versions The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the...

Provisioning 2203 : Citrix PVS breaks with Microsoft OLEDB driver v19

When upgrading PVS 2203 servers to mitigate a Microsoft OLEDB driver vulnerability CVE-2023-36728, a customer incorrectly removed Microsoft OLE DB Driver 18 and installed Microsoft OLE DB Driver 19. PVS Server 2203 cannot use Microsoft OLE DB Driver 19 to communicate with the SQL server...

PVS Login error: Error "the domain\user does not have access to the farm" or "The specified AuthGroup does not exist" when Trying to Connect to PVS Farm

When trying to connect to a PVS Farm through the PVS Console, the following error is displayed and you cannot connect to the Farm. Error : "the domain\user does not have access to the farm" Error : "The specified AuthGroup does not exist"...

CVE-2016-9637 - Citrix XenServer Security Update

Description of Problem A security vulnerability has been identified in Citrix XenServer that may allow malicious privileged-mode code running within an HVM guest VM to compromise the host. This vulnerability affects all currently supported versions of Citrix XenServer up to and including Citrix...

CVE-2015-8277 - Citrix Licensing Security Updates

Description of Problem A vulnerability has been identified in Citrix Licensing that could allow a remote, unauthenticated attacker to crash the License Server and potentially execute arbitrary code on the server. This vulnerability affects the following products: Citrix License Server for Windows...

How to Change Management IP and Default Gateway Using NetScaler CLI

This article describes how to change management IP address and add new default gateway address using NetScaler CLI. Changing the Default Gateway of the NetScaler appliance can only be done via the CLI. The NetScaler appliance can only have 1 Default Gateway defined at a time...

XenServer Security Update for Multiple Issues

Severity :High Description of Problem Several issueshave beenidentifiedthat affect XenServer 8.4 and XenServer 9. Collectively, these issues may allowa malicious privileged userin a guest VM to compromise or crash the host. Theseissueshavethe following identifiers: CVE-2026-42492XenServer 9 only...

Hotfix XS82ECU1086 - For Citrix Hypervisor 8.2 Cumulative Update 1

Who Should Install This Hotfix? This is a hotfix for customers running Citrix Hypervisor 8.2 Cumulative Update 1 and is only available to customers on theCustomer Success Servicesprogram. All customers who are affected by the issues described inCTX693178 - Citrix Hypervisor Security Bulletinshoul...

XenServer - VMs on a Cisco USC host do not receive the DHCP settings

When running VMs on a XenServer 8.4 host running on Cisco UCS hardware, the VMs do not receive the DHCP settings...

Citrix DaaS - Unable to reconnect to a disconnected session

Users attempting to reconnect to their previously disconnected ICA sessions while accessing Citrix Virtual Apps and Desktops CVAD via Citrix Workspace App CWA are unable to do so. The reconnection process fails, potentially leaving users with a frozen or unresponsive application or desktop sessio...

Audio Volume Persistence Tool

Description When a user reconnects to a XenApp session, all playback audio devices are reset to 100% volume level. Any playback volume settings previously made in the session are lost. This may also happen with a XenDesktop session. This tool restores the volume settings from values stored in the...

Authentication Bypass Vulnerability in the Management Interface of Citrix Application Delivery Controller and Citrix Gateway

Description of Problem A vulnerability has been identified in the management interface of Citrix Application Delivery Controller ADC formerly known as NetScaler ADC, and Citrix Gateway, formerly known as NetScaler Gateway, that, if exploited, could allow an attacker with access to the management...

CVE-2016-4810 - Vulnerability in Citrix Studio Could Result in Insecure Access Policy Configuration

Description of Problem A vulnerability has been identified in Citrix Studio that could allow Access Policy rules to be set insecurely on the Citrix XenDesktop Delivery Controller. This vulnerability affects the following product versions: Citrix XenDesktop 7.x between versions 7.0 and 7.6...

Citrix Workspace app for Windows Security Bulletin CVE-2025-4879

Severity - High Description of Problem A vulnerability has been discovered that impacts the Citrix Workspace app for Windows. Affected Versions The vulnerability affects the following supported versions of the Citrix Workspace app for Windows Current Release CR Citrix Workspace app for Windows...

CWA Mac 2503: Launch Failure “no Citrix SSL server configured on the specified address”

Users who are on Citrix Workspace app for Mac 2503, attempting to launch Citrix sessions, may encounter a failure. The following error message is displayed to the end user: “No Citrix SSL Server configured on the specified address." as below...

Security Bulletins for XenServer

This article lists historic security bulletins published for XenServer 8.4. We recommend subscribing to security bulletin email alerts for timely notification of new bulletins. The bulletins advise about any software updates that have been published to address the issues. We highly recommend that...

Citrix Workspace app for HTML5 Security Bulletin CVE-2024-6148 and CVE-2024-6149

Description of Problem Two vulnerabilities have been discovered that impact the Citrix Workspace app for HTML5. Refer to below for further details: Affected Versions The vulnerabilities affect the following supported versions of the Citrix Workspace app for HTML5. Citrix Workspace app for HTML5...

Unable to Connect the Secure Web with the Error "Cannot open page"

Unable to open the internal pages from Secure Web. Error"Cannot open page"is displayed...

Launching Citrix Studio results in Error Id: XDDS:62B4A47D

Launching Citrix Studio results in 'Reenter the Controller address or enter a new address.' withError Id: XDDS:62B4A47D...

Security Advisory for Citrix Hypervisor

Several security issues have been identified that affect Citrix Hypervisor: An issue has been identified that may allow privileged code in a PV guest VM to cause the host to crash. This issue has the following identifier: CVE-2022-23034 Note that PV guests are supported in Citrix XenServer 7.1 LT...

How to Create an ICA File with Minimal Parameters

To create an ICA file with minimal parameters set, complete the following procedure: 1. Download theICA file from this article. 2. Copy the content from this file into anICA file. 3. Update theusername orpassword parameter with the relevant username and password that you use in your environment...

How to configure bookmarks on NetScaler Gateway

This is a step-by-step on how to create bookmarks on the NetScaler and attach those to specific AD groups...

[Citrix Gateway] Can't Launch ICA Desktop/App with Error: 2517

You may observe ICA launch failures with error: 2517 through NetScaler gateway ICA proxy vServer. The issue happens when EDTAdaptive transport is enabled randomly...

RDP session fails to open, black screen appears briefly and the connection stops

Cannot start RDP session on VDA. A black screen appears briefly and the connection stops...

Citrix ShareFile StorageZones Controller Multiple Security Updates

Description of Problem Two security issues have been identified within Citrix ShareFile StorageZones Controller that, if exploited, could allow a compromised or malicious ShareFile user to write arbitrary files as that Active Directory user to the local file system, and also to discover the full...

Profile Management Configuration Checking Tool - UPMConfigCheck

Please note: You can download the required file from the Citrix downloads website by visiting the following link: https://www.citrix.com/downloads/citrix-tools Profile Management Configuration Check Tool UPMConfigCheck Created Date: February 27, 2012 Updated Date: August 23, 2023 Description...

CVE-2018-18883 - Citrix XenServer Security Update

Description of Problem A security issue has been identified in Citrix XenServer that may allow a malicious administrator of an HVM guest VM to crash the host. This issue affects the following versions of Citrix XenServer: Citrix XenServer 7.6 Citrix XenServer 7.5 Citrix XenServer 7.1 LTSR CU1 The...

Citrix XenServer Multiple Security Updates

Description of Problem Two issues have been identified within Citrix XenServer, which could, if exploited, allow unprivileged code in a PV guest VM to cause the host to crash or become unresponsive. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and...

Citrix NetScaler Application Delivery Controller and NetScaler Gateway Multiple Security Updates

Description of Problem A number of vulnerabilities have been identified in supported versions of Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway. The following vulnerabilities have been addressed: CVE-2018-6810: Citrix NetScaler Application Delivery Controller ADC and...

CVE-2018-5314 - Authentication Bypass Vulnerability in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway

Description of Problem A vulnerability has been identified in the management interface of Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway that, if exploited, could allow an unauthenticated attacker with access to the NetScaler management interface to bypass authenticati...

Users prompted for the message "Please close your browser to protect your account"

When using Storefront and SAML or smart card authentication, after the user logs off or the session times out, if the user tries to log back in an error is displayed. With Smartcard the error is You cannot log on using a smart card Please close your browser to protect your account SAML...

CVE-2016-6493 - Memory Permission Weakness in Citrix XenApp and XenDesktop

Description of Problem A weakness has been identified in Citrix XenApp and XenDesktop. While this issue is not directly exploitable, it could potentially weaken an existing security mitigation, resulting in a loss of defence in depth. This weakness affects the following Citrix products: Citrix...

XenServer Security Update for CVE-2025-27465

Severity: Medium Description of Problem An issue has been identified in XenServer 8.4 that may allow privileged code in a guest VM to cause the host to crash or become unresponsive. This issue has the following identifier: CVE-2025-27465 Affected Versions This issue affects XenServer 8.4. Note th...

XenServer and Citrix Hypervisor Security Update for CVE-2024-28956

Description of Problem Intel has disclosed a security issue affecting Intel CPUs. This CPU hardware issue may allow privileged code in a guest VM to infer some memory content of another VM that is running on the same CPU core. Although this is not a vulnerability in the XenServer or Citrix...

Citrix Provisioning Security Bulletin CVE-2024-6150

Description of Problem A vulnerability has been discovered that impacts Citrix Provisioning. Refer to below for further details: Affected Versions The vulnerability affects the following supported versions of Citrix Provisioning Current Release CR Citrix Provisioning versions before 2402 Long Ter...