# CERT-FR Flags Citrix XenServer Vulnerabilities

Published: 2026-11-12 · Severity: routine · Sectors: Technology
Canonical: https://vorant.io/reports/4f92a8dc-6d1c-5ea2-a524-d5d1e30b452f/cert-fr-flags-citrix-xenserver-vulnerabilities
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> CERT-FR advises patching multiple Citrix XenServer flaws allowing privilege escalation, data exposure, and security bypass.

Source: cert.cyber.gouv.fr — https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1502

## 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: No exploitation in the wild and no public exploit is recorded for the CVEs named.

CERT-FR issued an advisory covering multiple vulnerabilities in Citrix XenServer versions 8.4 and 9 that lack the latest security patches. The flaws, referenced across nine CVEs, allow an attacker to achieve privilege escalation, breach data confidentiality, and bypass security policies; the impact of some issues is unspecified by the vendor. No evidence of active exploitation is mentioned in the advisory.

Citrix published the corresponding security bulletin (CTX697316) on 10 November 2026 covering fixes for these issues. Defenders running affected XenServer versions should apply the vendor's latest security patches referenced in the bulletin as soon as possible to mitigate the risk of privilege escalation and data exposure on hypervisor infrastructure.

## Mentioned in this report

- Vulnerabilities: CVE-2024-21963, CVE-2024-36350, CVE-2024-36357, CVE-2026-102705, CVE-2026-102706, CVE-2026-102707, CVE-2026-102708, CVE-2026-119779, CVE-2026-119780

Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1502

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