CVE-2016-9383

Name: CVE-2016-9383
Creator: NVD / NIST
Published: 2017-01-23T21:59:02.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.51%

Last modified Jun 17, 2026

CVE-2016-9383 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.51%

39.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Xen	Xen	All versions
Citrix	Xenserver	6.0.2
Citrix	Xenserver	6.2.0
Citrix	Xenserver	6.5
Citrix	Xenserver	7.0

References

http://www.securityfocus.com/bid/94474Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037346Third Party Advisory, VDB Entry
http://xenbits.xen.org/xsa/advisory-195.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775Patch, Third Party Advisory
http://www.securityfocus.com/bid/94474Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037346Third Party Advisory, VDB Entry
http://xenbits.xen.org/xsa/advisory-195.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775Patch, Third Party Advisory

Timeline

Published: Jan 23, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9383?

How severe is CVE-2016-9383?

Severity scoring for CVE-2016-9383 is pending analysis. The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9383?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-9383?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST