CVE-2017-15593: Xen

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.

Affected products

• Xen Xen: up to and including 4.9.0

Published 2017-10-18. Last modified 2026-06-17.