This is the official website of the Veyon project (Virtual Eye On Networks) ran by the Veyon community. The website contains a download area, documentation and a blog. https://veyon.io/ Thu, 27 Aug 2026 09:17:24 +0200 Thu, 27 Aug 2026 09:17:24 +0200 Jekyll v4.3.2 <p>We’re happy to announce the release of Veyon 4.11.1. This patch release is a security- and reliability-focused update that hardens the VNC network protocol, the internal feature-communication layer, and the Linux authentication helper against malformed data, tampering, and unauthorized access. It also fixes a broken wildcard pattern matching in access control rules, corrects configuration merge/migration bugs, and adds a new setting to cap simultaneous server connections and protect against resource exhaustion. On Linux, the PipeWire-based VNC server for Wayland sessions has been greatly optimized for much lower CPU usage, while the demo/broadcast feature was refactored to recover more smoothly from slow or disconnected student computers.</p> <p>Beyond the under-the-hood work, this release brings several user-facing conveniences and bugfixes: teachers can now set a custom title for text messages sent to students, remote access windows show screen content immediately instead of with a delay, and file transfer failures now surface a clear error dialog rather than failing silently. Various crashes and glitches were also resolved, including one when closing a computer’s zoom view, incorrect computer removal in the Spotlight view, and Windows-specific issues around service reinstallation and virtual desktop detection. LDAP/AD searches are more robust against special characters, and the CLI now gives clearer error messages for invalid or unknown commands.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Core, security &amp; reliability <ul> <li>Hardened the VNC network protocol against malformed or oversized data, improving stability and security when connecting to computers (by @pioug43)</li> <li>Improved authentication security for internal feature communication, protecting against unauthorized message injection (by @pioug43)</li> <li>Significantly hardened the Linux authentication helper (used for logon checks) against memory inspection and environment tampering attacks</li> <li>Linux: environment variables passed to a newly started Veyon Server (e.g. display, session bus, audio settings) are now validated and filtered to prevent injection of unsafe or spoofed values</li> <li>Fixed the “Wildcard” pattern matching used in access control rules (e.g. <code class="language-plaintext highlighter-rouge">*.example.org</code>) to behave correctly and safely (by @pioug43)</li> <li>Fixed broken config merge and key removal (#1155)</li> <li>Fixed configuration migration between non-subsequent minor releases</li> <li>Use Qt rather than OpenSSL directly for generating random data</li> <li>Pipewire and headless VNC servers now listen on localhost only like all other internal VNC server backends</li> <li>Updatedand rebased bundled libvncserver library to latest upstream version</li> </ul> </li> <li>Master <ul> <li>Fixed delay in remote access windows to show screen updates immediately after opening the window</li> <li>Fixed a crash that could occur when closing the “zoom” view for a computer (by @pioug43)</li> <li>Fixed an issue where removing computers from the Spotlight view could accidentally remove the wrong computer</li> </ul> </li> <li>Configurator <ul> <li>Fixed location table state and button management (#1150 by @NICourced)</li> <li>Added a new setting, <em>“Maximum simultaneous server connections”</em> to protect the Veyon Server from being overwhelmed by too many connections at once (by @pioug43)</li> <li>Check for a valid access control rule being selected when clicking “Move down”</li> </ul> </li> <li>Plugins <ul> <li>Demo: fixed several issues where a slow or lagging student computer during a demo/broadcast could not (re)connect; the demo feature now recovers more smoothly and adapts image quality more accurately based on actual bandwidth usage</li> <li>FileTransfer: users now see a clear error dialog if a file transfer fails, instead of the failure passing silently.</li> <li>LDAP: Improved special-character handling when searching LDAP/Active Directory, fixing potential search failures with names containing special characters</li> <li>LDAP: added “ou” (organizational unit) as an option for identifying location names</li> <li>PowerControl: fixed missing confirmation dialog handling for delayed power-down</li> <li>RemoteAccess: fixed memory leak</li> <li>RemoteAccess: use lighter image compression resulting in less CPU usage on the clients at the cost of slightly more bandwidth</li> <li>Screenshot: wait for initial framebuffer update when invoked immediately after connecting (e.g. via CLI/WebAPI) (#1067)</li> <li>TextMessage: dialog now lets teachers set a custom title for the message window shown to students and defaults to “Message from <username>" (#999, #1129, #1159 / by @pioug43)</username></li> <li>TextMessage: always show and keep message dialog in front</li> <li>WebAPI: added null-connection checks across several endpoints</li> <li>WebAPI: fixed HTTPS setup logic</li> </ul> </li> <li>CLI <ul> <li>Refactored handling of invalid or unknown commands and improved messages and fixed crash in certain error cases (#1152)</li> <li>Fixed wrong order of arguments printed in the help for certain commands (#1156)</li> </ul> </li> <li>Linux <ul> <li>Greatly improved performance of the Pipewire-based VNC server for Wayland sessions, resulting in much lower CPU usage</li> <li>Fixed an issue where remote screen-share/demo sessions could occasionally miss part of the screen after resizing</li> <li>Improved reliability of user session detection and reduced console error spam in non-standard environments</li> </ul> </li> <li>Windows <ul> <li>Fixed a possible crash/leak when repeatedly installing or reinstalling the Veyon service</li> <li>Fixed incorrect detection of the active virtual desktop, which could affect window focus behavior on some systems</li> <li>Fixed potential memory issues in the Windows Event Log integration</li> <li>3rdparty: UltraVNC: include fixes for certain VDI environments</li> <li>3rdparty: OpenLDAP: update to 2.6.14</li> </ul> </li> </ul> Fri, 21 Aug 2026 15:21:19 +0200 https://veyon.io/blog/2026/08/21/veyon-4-11-1-released/ https://veyon.io/blog/2026/08/21/veyon-4-11-1-released/ Veyon Releases <p>We’re happy to announce the release of Veyon 4.11.0, the latest minor update in the Veyon 4 series. Linux users will enjoy experimental support for Wayland, which enables them to monitor client computers running Wayland-based KDE or GNOME sessions. The Internet Access Control add-on now offers a new feature to dynamically restrict the internet access to certain websites only instead of completely blocking it (fully supported by the routing and proxy-redirection backends and partially supported by firewall backend). It has also received an alternative backend for restricting internet access, which changes the proxy configuration to redirect it to an invalid address.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Core <ul> <li>FeatureWorker: improve security by adding authentication mechanism to only accept connections from workers with matching tokens (reported by https://github.com/priyanshukumar397)</li> <li>Improved LibVNCServer integration to share code across VNC server backends in common libraries</li> </ul> </li> <li>Plugins <ul> <li>FileTransfer: add runtime source/destination path selection so users optionally can specify where to tranfer files to or where to collect files from</li> <li>FileTransfer: fixed sizes and positions of dialogs</li> <li>ScreenLock: don’t lock the master computer when locking all screens and master computer is included in monitoring view (#1133)</li> </ul> </li> <li>Linux <ul> <li>Add Pipewire-based VNC server for Wayland sessions</li> <li>Implement input device locking for Wayland sessions</li> <li>Implement screen saver control for Wayland sessions</li> </ul> </li> <li>Windows <ul> <li>Fix memory leaks and improve code quality by using RAII pattern for all kinds of Windows resources</li> <li>3rdparty: FFmpeg: update to 8.1.2</li> <li>3rdparty: OpenSSL: update to 3.5.7</li> <li>3rdparty: libjpeg-turbo: update to 3.2.0</li> <li>3rdparty: UltraVNC: update to 1.8.2.4</li> </ul> </li> </ul> Fri, 10 Jul 2026 14:18:19 +0200 https://veyon.io/blog/2026/07/10/veyon-4-11-0-released/ https://veyon.io/blog/2026/07/10/veyon-4-11-0-released/ Veyon Releases <p>We’re happy to announce Veyon 4.10.4, the fourth maintenance release of Veyon 4.10.x. This release primarily fixes a performance regression in Veyon Master resulting from the thumbnail layouting improvement in 4.10.3. Additionally it’s now possible to specify a prefix or suffix by which to extend the identity of guest users automatically such that for example valid exam users can easily be recognized.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Core <ul> <li>Improve robustness by using <code class="language-plaintext highlighter-rouge">std::vsnprintf()</code> instead of <code class="language-plaintext highlighter-rouge">sprintf()</code>/<code class="language-plaintext highlighter-rouge">snprintf()</code></li> <li>Add various size checks when receiving usernames, signatures and tokens</li> </ul> </li> <li>Master <ul> <li>Fixed performance regression introduced with improved thumbnail layouting in 4.10.3</li> <li>Added support for extending guest user identities with prefix or suffix</li> </ul> </li> <li>Plugins <ul> <li>Demo: don’t lock the master computer when sharing a user’s screen fullscreen (#1126)</li> </ul> </li> <li>Linux <ul> <li>Added Nix flake and NixOS module</li> </ul> </li> <li>Windows <ul> <li>3rdparty: UltraVNC: update to 1.8.2.3</li> </ul> </li> </ul> Wed, 03 Jun 2026 14:32:19 +0200 https://veyon.io/blog/2026/06/03/veyon-4-10-4-released/ https://veyon.io/blog/2026/06/03/veyon-4-10-4-released/ Veyon Releases <p>We’re happy to announce Veyon 4.10.3, the third maintenance release of Veyon 4.10.x. This is a quite large maintenance release addressing several stability and reliability issues on Windows, improves the monitoring view in Veyon Master and fixes several file collecting releated issues in the FileTransfer plugin.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Core <ul> <li>Cache authorized user groups from configuration</li> </ul> </li> <li>Configurator <ul> <li>Auto-increment default names for new objects (#1123)</li> <li>Hide x11vnc parameters label in standard view (#1125)</li> </ul> </li> <li>Master <ul> <li>Improved mechanism for layouting thumbnails to always display the whole caption even for long user and/or device names</li> <li>Optimized icon size auto adjust</li> <li>Defer initial icon size auto adjust until application window is fully visible</li> </ul> </li> <li>Plugins <ul> <li>UltraVNC: make sure to load user32.dll and shcore.dll from the Windows system directory only</li> <li>LDAP: add hint on configuration for FreeIPA (#1122)</li> <li>LDAP: update bundled kldap library to fix several issues related to memory allocation failures</li> <li>FileTransfer: only collect from devices with logged in users</li> <li>FileTranser: indicate 100% progress if finished with no files to be collected</li> <li>FileTransfer: show number of files to be collected in 2nd column</li> <li>WebAPI: make the plugin build explicit via WITH_WEBAPI (#1124)</li> </ul> </li> <li>Linux <ul> <li>Add Fedora 44 packages</li> <li>Add Ubuntu 26.04 packges</li> <li>Drop Fedora 42 packages</li> <li>Prepared API for upcoming Wayland support for Linux</li> </ul> </li> <li>Windows <ul> <li>Added advanced device locking options for the screen lock feature - touch screens and touch pads are now temporarily disabled at the device level to suppress gesture handling</li> <li>Improved mechanism for querying full user name - fixes missing full/display names for Azure AD users</li> <li>Improved error handling and resource cleanup in several functions</li> <li>Various optimizations and resiliency improvements</li> <li>Build all binaries without LTO (link time optimization) to fix crashes on certain CPUs</li> <li>3rdparty: UltraVNC: update to 1.8.2.2 (includes fix for CVE-2026-3787 / CWE-428)</li> <li>3rdparty: libjpeg-turbo: update to 3.1.4.1</li> <li>3rdparty: libpng: update to 1.6.58</li> <li>3rdparty: OpenSSL: update to 3.5.6</li> </ul> </li> </ul> Fri, 22 May 2026 14:28:11 +0200 https://veyon.io/blog/2026/05/22/veyon-4-10-3-released/ https://veyon.io/blog/2026/05/22/veyon-4-10-3-released/ Veyon Releases <p>We’re happy to announce Veyon 4.10.2, the second maintenance release of Veyon 4.10.x. This release fixes a Linux packaging bug which effectively restores missing all translation files for the UI.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Master <ul> <li>Strip domain from displayed user login names if full name is not available</li> </ul> </li> <li>Service <ul> <li>Added placeholder to user identification dialog</li> </ul> </li> <li>CLI <ul> <li>Improved space handling for running command file (#1104)</li> </ul> </li> <li>Linux <ul> <li>Fixed CI to build proper release packages (with optimizations and including translations) (#1102)</li> </ul> </li> <li>Windows <ul> <li>Added block sleep key when screen is locked (#1103)</li> <li>3rdparty: OpenLDAP: update to 2.6.13</li> <li>3rdparty: Qt: update to 6.10.3</li> </ul> </li> </ul> Fri, 20 Mar 2026 14:21:11 +0100 https://veyon.io/blog/2026/03/20/veyon-4-10-2-released/ https://veyon.io/blog/2026/03/20/veyon-4-10-2-released/ Veyon Releases <p>We’re happy to announce Veyon 4.10.1, the first maintenance release of Veyon 4.10.x. This release fixes various bugs and contains minor improvements.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Master <ul> <li>Show short tooltips in icons only mode</li> </ul> </li> <li>Configurator <ul> <li>Order of locations and computers can now be changed with new move buttons (thanks to @pgilfernandez)</li> </ul> </li> <li>Plugins <ul> <li>FileTransfer: allow configuration of up to three grouping attributes when collecting files for greater flexibility</li> <li>LDAP: list computers of all locations or groups matching a certain name - fixes empty locations if there are multiple locations (e.g. OUs) with the same name</li> </ul> </li> <li>Linux <ul> <li>Drop openSUSE Leap 15.6 packages</li> </ul> </li> <li>Windows <ul> <li>Fix all Veyon applications crashing at exit due to threading issue in Qt 6.9+ – fixes faulty error message when importing configuration during installation (#1099)</li> <li>Refactored key event handling in VNC-based remote control views – now the local keyboard layout always defines which keys are sent while the remote keyboard layout has no influence - fixes errors when transmitting characters at the 3rd keyboard level (AltGr) such as @ or € in European keyboard layouts or cyrillic characters in general (#1098, #940, #956, #779, #701)</li> <li>3rdparty: libpng: update to 1.6.55</li> <li>3rdparty: OpenSSL: update to 3.5.5</li> <li>3rdparty: Qt: update to 6.10.2 with more threading-related patches</li> </ul> </li> </ul> Fri, 20 Feb 2026 14:21:11 +0100 https://veyon.io/blog/2026/02/20/veyon-4-10-1-released/ https://veyon.io/blog/2026/02/20/veyon-4-10-1-released/ Veyon Releases <p>We’re happy to announce Veyon 4.10.0, a new minor release series of Veyon 4. The new version builds on the stable version 4.9.8 and adds a new feature for collecting files from students. There is also a new advanced option to prompt users in guest sessions to enter their name, so that, for example, in exam situations with logged-in guest accounts, they must enter their name. The name is then displayed in Veyon Master instead of the guest account and is also used to name collected files. On smaller screens, the toolbar in Veyon Master now always expands automatically so that all buttons are always visible.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>New features <ul> <li>Added new feature to collect files from remote computers</li> <li>Added option to request user identification for guest sessions (enable at configuration page “Master” at the very bottom in advanced view mode)</li> </ul> </li> <li>Master <ul> <li>Refactored main toolbar to resize itself and wrap buttons dynamically</li> </ul> </li> <li>Plugins <ul> <li>LDAP Basic got renamed to LDAP/AD since the commercial LDAP Pro add-on has been retired</li> <li>Allow logging in users remotely without a password</li> </ul> </li> <li>Linux <ul> <li>Added options for customizing delays between simulated key presses when logging in users</li> </ul> </li> <li>Windows <ul> <li>Rebase build environment to Debian 13 / GCC 14</li> <li>Improved management and monitoring of the Veyon Server process to restart it more reliably on unexpected shutdown - fixes issues where computers were accessible only after restarting the Veyon Service</li> <li>Veyon Server no longer shuts down when using the builtin UltraVNC server parallel to the official UltraVNC service</li> <li>3rdparty: Qt: update to 6.10.2 including bugfix for TLS-related performance regression (https://codereview.qt-project.org/c/qt/qtbase/+/606906)</li> <li>3rdparty: libpng: update to 1.6.54</li> </ul> </li> </ul> Fri, 23 Jan 2026 16:42:11 +0100 https://veyon.io/blog/2026/01/23/veyon-4-10-0-released/ https://veyon.io/blog/2026/01/23/veyon-4-10-0-released/ Veyon Releases <p>We’re happy to announce Veyon 4.9.8, the eigth maintenance release of Veyon 4.9.x. It contains several minor improvements in Veyon Master, fixes a bug in the LDAP/AD module and disables the mechanism for handling interfering windows by default. The Internet Access Control and Auvidus add-ons have gained new configuration options to control how the respective blocking functions behave when the service starts or the computer boots up.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>General <ul> <li>Improved compatibility with Qt 6.10</li> <li>Make log directory handling more secure (prevent symlink/junction abuse and add full path validation, #1075)</li> </ul> </li> <li>Master <ul> <li>Auto-adjust icon size when switching computer positioning mode</li> <li>Fixed enforcing designated mode (i.e. screen lock) if system tray icon is disabled in the service configuration</li> <li>Allow sorting computers by user’s surname (#1034, #1045)</li> </ul> </li> <li>Plugins <ul> <li>LDAP: fixed MAC address retrieval when 1:1 mapping 1:1 of OUs to locations is enabled.</li> </ul> </li> <li>Linux <ul> <li>Add Fedora 43 packages</li> <li>Add openSUSE Leap 16.0 packages</li> <li>Drop Fedora 41 packages</li> </ul> </li> <li>Windows <ul> <li>Disable interfering windows handling by default since it caused troubles in various environments</li> <li>3rdparty: libpng: update to 1.6.53</li> <li>3rdparty: libjpeg-turbo: update to 3.1.2</li> <li>3rdparty: OpenSSL: update to 3.5.4</li> </ul> </li> </ul> Fri, 12 Dec 2025 13:12:11 +0100 https://veyon.io/blog/2025/12/12/veyon-4-9-8-released/ https://veyon.io/blog/2025/12/12/veyon-4-9-8-released/ Veyon Releases <p>We’re happy to announce Veyon 4.9.7, the seventh maintenance release of Veyon 4.9.x. It introduces optimized bandwidth calculation for demo mode based on type and speed of the network link. The Entra ID Connector (part of Veyon Add-ons) received improved Intune support to query MAC addresses on-demand when powering on computers.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>General: <ul> <li>Improved compatibility with Qt 6.9 and 6.10</li> </ul> </li> <li>Plugins <ul> <li>Demo: calculate internal bandwidth limit according to network speed and link type (i.e. use half the bandwidth of 100M/1G/2.5G Ethernet links and quarter the bandwidth of wireless links)</li> <li>PowerControl: modernized Wake-on-LAN implementation and added debug messages</li> </ul> </li> <li>Linux: <ul> <li>Add Debian 13 packages</li> <li>Add RHEL 10 packages</li> <li>Drop Ubuntu 20.04 packages</li> </ul> </li> <li>Windows: <ul> <li>3rdparty: libpng: update to 1.6.50</li> <li>3rdparty: libjpeg-turbo: update to 3.1.1</li> <li>3rdparty: OpenSSL: update to 3.5.2</li> </ul> </li> </ul> Fri, 15 Aug 2025 21:24:19 +0200 https://veyon.io/blog/2025/08/15/veyon-4-9-7-released/ https://veyon.io/blog/2025/08/15/veyon-4-9-7-released/ Veyon Releases <p>We’re happy to announce Veyon 4.9.6, the sixth maintenance release of Veyon 4.9.x. The LDAP/AD plugin now supports mapping OUs/containers 1:1 to locations. On Windows a mechanism has been added to handle windows that interfere with screen capturing. Besides those two additions, only bug fixes and 3rdparty component updates are included.</p> <p>All downloads for this release are available in the <a href="https://veyon.io/download">download area</a>.</p> <p>A complete list of changes in detail can be found below:</p> <ul> <li>Master: <ul> <li>Improved performance of internal data models</li> </ul> </li> <li>Plugins <ul> <li>LDAP: added support for mapping OUs/containers 1:1 to locations (backport from retired LDAP Pro add-on)</li> </ul> </li> <li>Service: <ul> <li>Dropped LanmanWorkstation dependency on Windows to fix potential service start issues</li> </ul> </li> <li>Linux: <ul> <li>Add Fedora 42 packages and drop Fedora 40 packages</li> <li>Drop openSUSE 15.5 packages</li> </ul> </li> <li>Windows: <ul> <li>Added various actions for handling windows with unusual attributes/settings that interfere with screen capturing (configurable in advanced view mode)</li> <li>Dropped repeated session-related debug messages</li> <li>3rdparty: DDEngine: update to 1.6.1.0</li> <li>3rdparty: libpng: update to 1.6.48</li> <li>3rdparty: OpenLDAP: update to 2.6.10</li> <li>3rdparty: UltraVNC: update to 1.6.1.0</li> </ul> </li> </ul> Wed, 28 May 2025 22:41:19 +0200 https://veyon.io/blog/2025/05/28/veyon-4-9-6-released/ https://veyon.io/blog/2025/05/28/veyon-4-9-6-released/ Veyon Releases