What is CVE-2017-10923?

CVE-2017-10923 is a medium-severity vulnerability in Xen, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-07-05.

How severe is CVE-2017-10923?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Xen

CVE-2017-10923

Xen through 4.8.x does not validate a vCPU array index upon the sending of an SGI, which allows guest OS users to cause a denial of service (hypervisor crash), aka XSA-225.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.8th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Xen — versions 4.6.0, 4.6.1, 4.6.2

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1038735 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/99160 (VDB Entry, vdb-entry, Tool Signature)
security.gentoo.org/glsa/201708-03 (vendor-advisory)
xenbits.xen.org/xsa/advisory-225.html (Mailing List, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2017-10923?: CVE-2017-10923 is a medium-severity vulnerability in Xen, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-07-05.
How severe is CVE-2017-10923?: Medium severity. CVSS v3 base score is 6.5 out of 10.