Citrix ShareFile storage zones Controller multiple security updates

Description of Problem Security issues have been identified in customer-managed Citrix ShareFile storage zone controllers. These vulnerabilities, if exploited, would allow an unauthenticated attacker to compromise the storage zones controller potentially giving an attacker the ability to access...

Citrix Gateway Plug-in for Windows Security Update

Description of Problem Vulnerabilities have been identified in Citrix Gateway Plug-in for Windows that, if exploited, could result in a local user escalating their privilege level to SYSTEM. The vulnerabilities have the following identifiers: CVE-2020-8257 CVE-2020-8258 These vulnerabilities affe...

Impact of Chromium vulnerabilities CVE-2023-4863 and CVE-2023-5217 on Cloud Software Group products

Cloud Software Group will continue to update this post as additional information becomes available. Summary Google Chromium Heap-Based Buffer Overflow Vulnerability Cloud Software Group is aware of the vulnerabilities CVE-2023-4863 and CVE-2023-5217 that impact Chromium. CVE-2023-4863 description...

Citrix XenServer 7.2 Multiple Security Updates

Description of Problem A number of security issues have been identified within Citrix XenServer 7.2 which could, if exploited, allow a malicious man-in-the-middle MiTM attacker on the management network to decrypt management traffic. Collectively, this has been rated as a medium severity...

Graphical Issues with Citrix Workspace App 2503 and Intel GPUs

Customers using the Citrix Workspace App for Windows version 2503 or later on Windows endpoint devices, like the Microsoft Surface Pro laptops equipped with specific Intel GPUs using older Intel drivers, may encounter graphical anomalies. These issues can manifest as visual artefacts or black box...

Citrix Licensing: Studio unable to connect to Licensing server - Untrusted server

1. Unable to connect to Citrix Licensing server from Studio getting "Untrusted server". 2. Getting "An error occurred while retrieving the certificate for the license server at this address". 3. Error Id: XDDS:BD69C800 DesktopStudioErrorId : UnknownError ErrorCategory : ResourceUnavailable...

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-8451, CVE-2026-8452, CVE-2026-8655, CVE-2026-10816, CVE-2026-10817, and CVE-2026-13474

Severity - High Description of Problem Multiple vulnerabilities have 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...

Citrix SD-WAN Security Bulletin for CVE-2022-27505 and CVE-2022-27506

Vulnerabilities have been discovered in multiple Citrix SD-WAN products. These vulnerabilities, if exploited, could result in the following security issues: CVE-ID| Description| CWE| Affected Products| Pre-conditions ---|---|---|---|--- CVE-2022-27505| Reflected cross site scriptingXSS| CWE-79:...

How to Collect a Citrix Diagnostic Facility (CDF) Trace at System Startup

The CDFControl utility is an event tracing controller or consumer for capturing Citrix Diagnostic Facility CDF trace messages displayed from various Citrix tracing providers. It is made to troubleshoot complex Citrix related issues, parse filter support, and collect performance data. To download...

ShareFile StorageZones Controller Security Update for CVE-2023-24489

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 o...

Error "Socket Error 10054" When Launching Virtual Desktop

Error "Socket Error 10054" when launching Virtual Desktop...

Citrix Hypervisor Security Update

A security issue has been identified in Citrix Hypervisor 7.1 LTSR CU2 that may allow privileged code in a PV guest VM to compromise the host. Citrix believes that there would be significant complexity in performing this attack in Citrix Hypervisor. The issue has the following CVE identifier:...

Citrix Application Delivery Management Security Bulletin for CVE-2022-27511 and CVE-2022-27512

Vulnerabilities have been discovered in Citrix Application Delivery Management Citrix ADM that, if exploited, could result in the following security issues: Corruption of the system by a remote, unauthenticated user. The impact of this can include the reset of the administrator password at the ne...

Citrix Workspace app for Windows Security Bulletin for CVE-2023-24484 & CVE-2023-24485

Vulnerabilities have been identified that, collectively, allow a standard Windows user to perform operations as SYSTEM on the computer running Citrix Workspace app. These vulnerabilities have the following identifiers: CVE ID| Description| Vulnerability Type| Pre-conditions ---|---|---|---...

Failed to launch session "session_name". Error code: 2519 on Citrix Workspace App During App/Desktop Launch

This article is intended for Citrix administrators and technical teams only. Non-admin users must contact their company’s Help Desk/IT support team and can refer to CTX297149 for more information. This article is intended for Citrix administrators and technical teams only. Non-admin users must...

CVE-2015-4000 - Citrix Security Advisory for DHE_EXPORT TLS Vulnerability

Overview A TLS protocol vulnerability has been recently disclosed that could result in attackers being able to intercept and modify SSL/TLS encrypted traffic to servers that support Diffie-Hellman based export cipher suites. This vulnerability is known as 'LogJam' and has been assigned the...

Cloud Software Group Security Advisory for CVE-2024-6387

Advisory for 3rd party CVE-2024-6387 Cloud Software Group is aware of the vulnerability CVE-2024-6387 impacting OpenSSH. Qualys has discovered a remote unauthenticated code execution vulnerability in OpenSSH’s server sshd in glibc-based Linux systems. Because this vulnerability is a regression of...

Event: 1020 Connection Validation failed on Domain "for user" for reason 'Deny'

SSL Certificate handshake is not successful for ICA sessions since the VDA's are not enabled with SSL communication. Mismatch of License edition configured under Studio Licensing...

Citrix Hypervisor Security Update

Description of Problem Several security issues have been identified that, collectively, may allow privileged code running in a guest VM to cause the host to crash or to become unresponsive. These issues have the following CVE identifiers: CVE ID| Description| Vulnerability Type| Pre-conditions...

Citrix Hypervisor Security Update

Description of Problem A security issue has been identified in certain CPU hardware that may allow unprivileged code running on a CPU core to infer the value of memory data belonging to other processes, virtual machines or the hypervisor that are, or have recently been, running on the same CPU...

Your corporate Citrix environment is currently unsupported alert shown even no expired license files

The alert "Citrix Virtual Apps and Desktops Warning: Your corporate Citrix environment is currently unsupported. Please contact your IT department to resolve." is shown when starting the session. No expired license file is stored on the license server...

Error: TDICA 1005/1007 and Sessions Disconnected/ Not Responding

Usersessions freezing / disconnecting. Network and performance has been checked and no issues found. However, TDICA 1005/1007 events are seen in the logs at the same time the error occurred. This might be a problem with flaky network connections between the ICA clients and the VDA servers Session...

Windows and Linux Virtual Delivery Agent for CVAD and Citrix DaaS Security Bulletin CVE-2023-24490

A vulnerability has been identified that impacts Virtual Delivery Agents for Windows or Linux used by Citrix Virtual Apps and Desktops and Citrix DaaS. The vulnerability affects the following supported versions of Windows Virtual Delivery Agent: Current Release CR Citrix Virtual Apps and Desktops...

Citrix Optimizer Tool

Citrix Optimizer Tool - v3.5.0.1 Created Date: Jun 21, 2017 Updated Date: Mar 12, 2025 SHA 256 Checksum: D8DCBF77BAE73E2EB4F8F6DCF408AFE90714230A15D3EB7390933D8DFB339044 To help us improve the Citrix Optimizer Tool, please send your feedback to https://forms.gle/TwWrKPT6J8u7GdKA6. Please note: Yo...

Citrix VDA Cleanup Utility Tool

Note: 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 All references to VDA in this article are to the Windows version of VDA. Citrix recommends that you use the built-in uninstaller to...

Citrix Workspace app for Mac Security Bulletin for CVE-2024-5027

A vulnerability has been discovered in Citrix Workspace app for Mac, which, if exploited, may result in elevation of privilege from a local authenticated user to a root user. Affected Versions: The following supported versions of Citrix Workspace app for Mac are affected by the vulnerability:...

Citrix Workspace app for Linux Security Bulletin for CVE-2023-24486

A vulnerability has been identified in Citrix Workspace app for Linux that, if exploited, may result in a malicious local user being able to gain access to the Citrix Virtual Apps and Desktops session of another user who is using the same computer from which the ICA session is launched. CVE ID|...

Citrix Hypervisor Security Update

Description of Problem An issue has been discovered in Citrix Hypervisor that, if exploited, could potentially allow an attacker on the management network to enumerate valid administrative account usernames. Note that this attack does not disclose the corresponding passwords and does grant not...

"The Delivery Controller failed to complete an audit of the sessions running on the VDA"

After installing of updating a Linux VDA to version 2402, the VDA registers against the DDC successfully. However, when the user tries to launch the VDA, the VDA immediately becomes unregistered and the troubleshooting tab on the DDC show the following error: The Delivery Controller failed to...

iOS Workspace Error "Http/1.1 Internal Server Error 43549" via Gateway nFactor Authentication

Workspace for iOS shows "Http/1.1 Internal Server Error 43549" after successful authentication via NetScaler Gateway. Workspace for Windows works fine. AAA nFactorauthentication profile is configured in NetScaler Gateway...

Citrix License server unavailable on Studio with Error: XDDS:796F2703

The license server is marked as unavailable on Studio even though the license server is up and running The error received when trying to connect to the license server is as follows, An error occurred while retrieving the certificate for the license server at this address. Further error details ar...

Citrix Hypervisor Security Update

Several security issues have been identified in Citrix Hypervisor, that may each allow privileged code in a guest VM to cause the host to crash or become unresponsive. These issues have the following identifiers: CVE-2021-28704 CVE-2021-28705 CVE-2021-28714 CVE-2021-28715 All of these issues affe...

Citrix Application Delivery Controller, Citrix Gateway, and Citrix SD-WAN WANOP appliance Security Update

Description of Problem Multiple vulnerabilities have been discovered in Citrix ADCformerly known as NetScaler ADC, Citrix Gatewayformerly known as NetScaler Gatewayand Citrix SD-WAN WANOP appliance models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities,if exploited,could result ina...

Citrix Hypervisor Security Updates

Description of Problem Modern CPUs contain random number generators that provide entropy randomness to the software running on those processors to use for purposes such as generating cryptographic encryption keys. Software can obtain entropy by using the RDRAND and RDSEED instructions. A security...

Citrix XenServer Multiple Security Updates

Important Note Due to concerns about the robustness of some of the Intel microcode updates included in the earlier hotfixes for these issues XS71ECU1009, XS72E013 and XS73E001, Citrix has superseded these hotfixes with new hotfixes listed below. Customers are strongly recommended to apply these n...

Citrix Hypervisor Security Update

Description of Problem Several security issues have been identified in Citrix Hypervisor formerly Citrix XenServer that may allow: unprivileged code in a PV guest VM to compromise that PV guest VM privileged code in a guest VM to cause the host to crash or become unresponsive privileged code in a...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of an HVM guest VM to compromise the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix...

Citrix Hypervisor Security Update

A security issue has been identified that affects Citrix Hypervisor. This issue may allow privileged code in a guest VM to cause the host to crash or become unresponsive. The issue only affects systems with Intel CPUs where the malicious guest VM has had a physical PCI device assigned to it by th...

CVE-2014-0160 - Citrix Security Advisory for the Heartbleed vulnerability

Overview A vulnerability has been recently disclosed in OpenSSL that could result in remote attackers being able to obtain sensitive data from the process address space of a vulnerable OpenSSL server or client. The issue has been assigned the following CVE identifier and is also known as the...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security issues have been identified within Citrix XenServer. These issues could, if exploited, allow a malicious administrator of a guest VM to compromise the host. The issues have the identifiers: CVE-2017-10920, CVE-2017-10921 and CVE-2017-10922 High: Grant...

Citrix Hypervisor Security Bulletin for CVE-2023-23583 and CVE-2023-46835

Description of Problem An issue has been discovered that affects Citrix Hypervisor 8.2 CU1 LTSR and may allow malicious privileged code in a guest VM to compromise an AMD-based host via a passed through PCI device CVE-2023-46835. In addition, Intel has disclosed a security issue affecting certain...

Citrix SD-WAN Multiple Security Updates

Description of Problem Multiple vulnerabilities have been identified in the management interface of Citrix NetScaler SD-WAN physical appliances and virtual appliances. Collectively these vulnerabilities could allow an unauthenticated attacker with access to the management interface to compromise...

Citrix Hypervisor Security Update

Description of Problem A number of security issues have been identified in certain CPU hardware that may allow unprivileged code running on a CPU core to infer the value of memory data belonging to other processes, virtual machines or the hypervisor that are, or have recently been, running on the...

Cloud Software Group Security Advisory for CVE-2024-3661

Cloud Software Group has evaluated the impact of vulnerability CVE-2024-3661 on our products. This vulnerability may allow an attacker on the same local network as the victim to read, disrupt, or modify network traffic expected to be protected by the VPN. Please find below the impact status: 1...

Citrix ADC and Citrix Gateway Security Update (CVE-2019-0140)

Description of Problem A vulnerability has been identified affecting Citrix Application Delivery Controller ADC formerly known as NetScaler ADC, and Citrix Gateway, formerly known as NetScaler Gateway, platforms which could result in privilege escalation via layer 2 network access on all network...

CVE-2019-13608 - XML External Entity (XXE) Processing Vulnerability in Citrix StoreFront Server

Description of Problem An XML External Entity XXE processing vulnerability has been identified in Citrix StoreFront Server that could allow an unauthenticated attacker to retrieve potentially sensitive information from the server. This vulnerability has been assigned the following CVE number: •...

Citrix Hypervisor Security Bulletin for CVE-2023-46838

Description of Problem An issue has been discovered that affects Citrix Hypervisor 8.2 CU1 LTSR and may allow malicious privileged code in a guest VM to cause the host to crash or become unresponsive. This issue has the following identifier: CVE-2023-46838 What Customers Should Do We have release...

Citrix Hypervisor Security Update for CVE-2023-20593

Description of Problem AMD has released updated microcode to address an issue with certain AMD CPUs. Although this is not an issue in the Citrix Hypervisor product itself, we have released a hotfix that includes this microcode to mitigate this CPU hardware issue. This issue has the following...

How to Change Order of NICs in XenServer

Theinterface-rename is a utility included in Citrix Hypervisor 8.2 Cumulative Update 1 and XenServer 8. This utility allows for granular management of network interface cards to facilitate renaming and reordering of them from the default installed configuration. The interface-rename utility refer...

CVE-2015-0235 - Citrix Security Advisory for glibc GHOST Vulnerability

Overview A vulnerability has been recently disclosed in the glibc gethostbyname function. This issue could potentially allow an attacker to inject code into a process that calls the vulnerable function. The issue is known as the GHOST vulnerability and has been assigned the following CVE...