VULNERABILITY INTELLIGENCE
CVE-2015-8555
CVSS score8.6 HIGH
EPSS probability2.25%
CISA KEVNot currently listed
Published2016-04-13
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Description
Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.
Weakness classification
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor