CVE-2017-10915: Xen

Critical severity, CVSS 9.0. EPSS: 1.7% chance of exploitation in the next 30 days.

The shadow-paging feature in Xen through 4.8.x mismanages page references and consequently introduces a race condition, which allows guest OS users to obtain Xen privileges, aka XSA-219.

Affected products

• Xen Xen: up to and including 4.8.1

Published 2017-07-05. Last modified 2026-06-17.