Citrix patches critical XenServer flaw allowing unauthenticated host takeover
CRITICAL · VULNERABILITYredteam/daily · 1 source
- Severity
- Critical
- Sources
- 1
What happened
Citrix has released fixes for XenServer 8.4 and 9 addressing a critical unauthenticated flaw that could let an attacker on the management network compromise virtualisation hosts. Bulletin CTX697256, published 3 November 2026, covers nine CVEs, though the article does not list their identifiers or the fixed build numbers. Defenders should apply the updates in CTX697256 to affected XenServer hosts and check the bulletin for the full CVE list.
For security analysts · Written by AI from 1 source · Wrong?
What to do
- Apply the security updates for XenServer 8.4 and 9 described in bulletin CTX697256.
- Check the CTX697256 bulletin for the full list of nine CVEs and confirm which hosts are affected.
Written by AI from the sources, checked against them
Full story timeline · 1 update
Who reported · 1 outlet
GBHackers