What is CVE-2017-18416?

CVE-2017-18416 is a medium-severity vulnerability in Cpanel, classified under Improper Access Control. CVSS score: 5.5/10. Published 2019-08-02.

How severe is CVE-2017-18416?

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

Vulnerability in Cpanel

CVE-2017-18416

cPanel before 67.9999.103 allows arbitrary file-overwrite operations during a Roundcube SQLite schema update (SEC-303).

Published 2019-08-02 · 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:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.1% 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

Cpanel

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

documentation.cpanel.net/display/CL/68+Change+Log (Release Notes, Vendor Advisory)
news.cpanel.com/cpanel-tsr-2017-0005-full-disclosure/ (Vendor Advisory)

Frequently asked questions

What is CVE-2017-18416?: CVE-2017-18416 is a medium-severity vulnerability in Cpanel, classified under Improper Access Control. CVSS score: 5.5/10. Published 2019-08-02.
How severe is CVE-2017-18416?: Medium severity. CVSS v3 base score is 5.5 out of 10.