CERT-FR Flags Citrix Scout and XenServer Flaws
CERT-FR advisory details multiple vulnerabilities in Citrix Scout Cloud Gateway, UniconOS Management and XenServer enabling remote code execution and privilege escalation.
Sourcecert.cyber.gouv.fr — open the original
What to check
- Applies to
- The 9 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- CISA lists CVE-2026-111497 as exploited in the wild.
CERT-FR published an advisory describing multiple vulnerabilities affecting several Citrix products: Scout Cloud Gateway (SCG) On-Prem, UniconOS Management (Scout) On-Prem including the Scout LTSR variant, and XenServer 8.4/9 when used with Workload Balancing or Conversion Manager components. Successful exploitation could allow an attacker to achieve remote code execution or elevate privileges on affected systems.
The advisory references nine CVEs spanning a wide range of disclosure dates (from 2022 through 2026), suggesting this bulletin consolidates fixes for both newly discovered and previously known issues now patched together, including CVE-2026-111497 which is specifically called out in a dedicated Citrix advisory affecting Unicon eLux Scout. No in-the-wild exploitation is mentioned in the advisory.
Defenders running affected Citrix components should apply the vendor-supplied patches: SCG On-Prem security fix 2605.1-3, UniconOS Management (Scout) On-Prem fix 2609.1, Scout LTSR fix 2508 CU2 LTSR, and updated XenServer Workload Balancing (2026.1.1+) and Conversion Manager (2026.2.0+) versions. Full details and patch downloads are available via Citrix bulletins CTX697256 and CTX697300.
Mentioned in this report
Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1449
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