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Citrix Security BulletinsCTX697316

XenServer Security Update for Multiple Issues

High 10 CVEs Published Nov 10, 2026 at 10:14 AM UTC

Summary

An issue has been identified that may allow an unauthenticated attacker on the management network to eventually infer the Pool Secret and so compromise the host.

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 Customers who wish to rotate the Pool Secret should follow the instructions at https://docs.xenserver.com/us/en/xenserver/8/hosts-pools/manage-pools.html#rotate-the-pool-secret or https://docs.xenserver.com/us/en/xenserver/9/hosts-pools/manage-pools.html#rotate-the-pool-secret

CVEs in this advisory 10

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.