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Citrix Security BulletinsCTX697256

XenServer Security Update for Multiple Issues

Critical 8 CVEs Published Nov 3, 2026 at 4:34 AM UTC

Summary

An issue has been identified that may allow an unauthenticated attacker on the management network to compromise the host and/or any running Workload Balancing (WLB) or Conversion Manager appliances.

Products covered

  • XenServer

Remediation

We have pushed updates to both the Early Access and Normal update channels of each of XenServer 8.4 and XenServer 9.

We recommend that customers update to the latest version from their chosen channel following the instructions at https://docs.xenserver.com/us/en/xenserver/8/update.html or https://docs.xenserver.com/us/en/xenserver/9/update.html We have released updated versions of Workload Balancing and Conversion Manager appliances at https://www.xenserver.com/downloads.

We recommend that customers update to versions 2026.1.1 or later of Workload Balancing and 2026.2.0 of Conversion Manager.

CVEs in this advisory 8

Updates

  1. Published by Citrix

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.