CVE-2017-12137: Citrix Xenserver

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref.

Affected products

• Citrix Xenserver: version 6.0.2 only; version 6.2.0 only; version 6.5 only; version 7.0 only; version 7.1 only; version 7.2 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Xen Xen: any version

Published 2017-08-24. Last modified 2026-06-17.