CVE-2016-9383

8.8 HIGH
Published: January 23, 2017 Modified: May 13, 2026
View on NVD

Description

Xen, when running on a 64-bit hypervisor, allows local x86 guest OS users to modify arbitrary memory and consequently obtain sensitive information, cause a denial of service (host crash), or execute arbitrary code on the host by leveraging broken emulation of bit test instructions.

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CVSS v3.x Details

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.securityfocus.com/bid/94474
Source: cve@mitre.org
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037346
Source: cve@mitre.org
Third Party Advisory VDB Entry
http://xenbits.xen.org/xsa/advisory-195.html
Source: cve@mitre.org
Patch Vendor Advisory
https://security.gentoo.org/glsa/201612-56
Source: cve@mitre.org
https://support.citrix.com/article/CTX218775
Source: cve@mitre.org
Patch Third Party Advisory
http://www.securityfocus.com/bid/94474
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037346
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://xenbits.xen.org/xsa/advisory-195.html
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://security.gentoo.org/glsa/201612-56
Source: af854a3a-2127-422b-91ae-364da2661108
https://support.citrix.com/article/CTX218775
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory

10 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
0.5%
39th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-20

Affected Vendors

citrix xen

Related CVEs

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CVE-2026-39948 N/A
CVE-2026-39938 9.8
CVE-2026-39900 N/A
CVE-2026-39899 N/A