What is CVE-2016-7093?

CVE-2016-7093 is a high-severity vulnerability in Xen, classified under CWE-264. CVSS score: 8.2/10. Published 2016-09-21.

How severe is CVE-2016-7093?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Xen

CVE-2016-7093

Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation.

Published 2016-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Xen — versions 4.5.3, 4.6.3, 4.7.0

Weakness classification (CWE)

CWE-264

References

xenbits.xen.org/xsa/advisory-186.html (Patch, Vendor Advisory)
www.securityfocus.com/bid/92865 (vdb-entry)
xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-em… (Patch, Vendor Advisory)
support.citrix.com/article/CTX216071 (Third Party Advisory)
www.securitytracker.com/id/1036752 (VDB Entry, Third Party Advisory, vdb-entry)
security.gentoo.org/glsa/201611-09 (vendor-advisory)

Frequently asked questions

What is CVE-2016-7093?: CVE-2016-7093 is a high-severity vulnerability in Xen, classified under CWE-264. CVSS score: 8.2/10. Published 2016-09-21.
How severe is CVE-2016-7093?: High severity. CVSS v3 base score is 8.2 out of 10.