CVE-2015-8555

8.6 HIGH
Published: April 13, 2016 Modified: May 06, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://xenbits.xen.org/xsa/advisory-165.html
Source: cve@mitre.org
Patch Vendor Advisory
http://support.citrix.com/article/CTX203879
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.debian.org/security/2016/dsa-3519
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/79543
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securitytracker.com/id/1034477
Source: af854a3a-2127-422b-91ae-364da2661108
http://xenbits.xen.org/xsa/advisory-165.html
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://security.gentoo.org/glsa/201604-03
Source: af854a3a-2127-422b-91ae-364da2661108

14 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.6 / 10.0
EPSS (Exploit Probability)
0.6%
68th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

xen citrix