What is CVE-2017-14431?

CVE-2017-14431 is a medium-severity vulnerability in Xen, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 5.5/10. Published 2017-09-13.

How severe is CVE-2017-14431?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Xen

CVE-2017-14431

Memory leak in Xen 3.3 through 4.8.x allows guest OS users to cause a denial of service (ARM or x86 AMD host OS memory consumption) by continually rebooting, because certain cleanup is skipped if no pass-through device was ever assigned, aka XSA-207.

Published 2017-09-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (24.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Xen — versions 3.3.0, 3.3.1, 3.3.2

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

lists.debian.org/debian-lts-announce/2018/09/msg00006.html (mailing-list)
xenbits.xen.org/xsa/advisory-207.html (Patch, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2017-14431?: CVE-2017-14431 is a medium-severity vulnerability in Xen, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 5.5/10. Published 2017-09-13.
How severe is CVE-2017-14431?: Medium severity. CVSS v3 base score is 5.5 out of 10.