estos Tech Essentials June 2026
With the estos tech essentials, we have summarized current essentials around technology and support from our portal support.estos.de.
SECURITY ADVISORY
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Update recommended! Security advisory for open-source Node.js in UCWeb – Affected versions and versions where the issue has been resolved
A security-critical bug has been identified concerning the open source component node.js in UCWeb,
https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2004
The vulnerability affects all previously released versions of ProCall 8 Enterprise as well as ProCall Infinity (DataCentre).
estos has already released updates to address the vulnerability. Customers and partners can obtain these via the usual channels and follow the standard update process. For ProCall 8 Enterprise, hotfix release 8.10.2 has been available since 26 June 2026. For ProCall Infinity, version 2603.1 was released on 30 June 2026.
Affected versions, recommended actions and versions with a fix for the vulnerability (Quality Updates) can be found here:
USEFUL INFORMATION
ProCall 8 Feature Update 8.10 – Group functions, monitoring login attempts, new features for Remote Desktop mode
Since the last feature update, the group functions in ProCall have been improved, for example through automated actions for logging on to and off from agent groups , as well as additional information on a user’s membership and login status within the respective group in the Favourites.
The estos UCServer now offers the option to monitor login attempts via the local interface (ProCall Desktop for Windows) and via the web interface (mobile app and ProCall Web). After a configurable number of failed login attempts, users are blocked in the UCServer either for a specific period or permanently.
The Remote Desktop mode in ProCall Desktop for Windows has been enhanced and now supports automatic switching to remote control mode. This is particularly beneficial for hybrid workplaces and home office scenarios.
In addition, several technical improvements and minor optimisations have been implemented, including more robust communication with the licence server and new security options for failed login attempts.
Further information can be found in the release notes:
MetaDirectory 6 Enterprise version 6.5: Publishing MetaDirectory to Entra via a Microsoft application proxy
From version 8.5 onwards, the estos MetaDirectory can be published via a Microsoft application proxy in Entra . This means that the MetaDirectory is also accessible from outside the local network for the following scenarios:
- via the browser in the MetaDirectory web UI
- via the MetaDirectory app for Microsoft Teams for Windows/macOS and for Android/iOS on the Microsoft Teams smartphone app
We have provided the relevant instructions for you here:
MetaDirectory 6 Enterprise version 6.4: New replicator for HCL Domino via the REST API
In MetaDirectory 6 Enterprise Version 6.4, the new Replicator for HCL Domino was released via REST API. With the "Replicator for HCL Domino" , estos MetaDirectory can replicate contact data directly from the databases of the HCL Domino server.
To connect estos MetaDirectory to an HCL Domino system, the Domino REST API must be installed and configured on the HCL Domino server.
Supported versions:
- HCL Domino 12.0.2 with Domino REST API version 1.1.7
- HCL Domino 14.x.x with Domino REST API version 1.1.6 or later
Further information and a step-by-step guide on how to set up the new replicator via the Domino REST API can be found here:
PRODUCTS

New releases at estos - recently released
ProCall Infinity (DataCenter) version 2603.1 released on .
The Quality Update resolves a critical security vulnerability relating to the underlying open-source Node.js version in the local UCServer web service (UCWeb).
ProCall Infinity - Release Notes 2603.1 Quality Update- ProCall 8 Enterprise HOTFIX 8.10.2 for version 8.10 released on .
This update resolves a critical security vulnerability relating to the underlying open-source Node.js version in the local UCServer web service (UCWeb).
ProCall 8 - Release Notes 8.10 - ProCall Web (Preview) - What's new in June 2026?
ProCall Web - What's new in June 2026 - MetaDirectory 6 Enterprise version 6.5 released on .
MetaDirectory 6 Enterprise Release Notes 6.5 - ECSTA 7 for OpenScape 4000 version 7.1.5 released on .
ECSTA 7 - Release Notes 7.1.5 ECSTA for OpenScape 4000 - ECSTA 7 for MiVoice MX-ONE version 7.1.5 released on .
ECSTA 7 - Release Notes 7.1.5 ECSTA for MiVoice MX-ONE
Yo can find an overview of our Release Notes here...
YOUR CONTRIBUTION

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At support.estos.de you will find technical information and helpful articles on installation, commissioning, operation, maintenance, troubleshooting, tutorials, interesting facts about estos software and products in the various system environments. The articles are subject to constant revision and updates.
