What is CVE-2017-18400?

CVE-2017-18400 is a high-severity vulnerability in Cpanel, classified under Command Injection. CVSS score: 7.8/10. Published 2019-08-02.

How severe is CVE-2017-18400?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Cpanel

CVE-2017-18400

cPanel before 68.0.15 allows local root code execution via cpdavd (SEC-333).

Vulnerability class: Command Injection (OS Command Injection)

Published 2019-08-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (43.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-77 — Command Injection

References

documentation.cpanel.net/display/CL/68+Change+Log (Product, Release Notes)
news.cpanel.com/cpanel-tsr-2017-0006-full-disclosure/ (Vendor Advisory)

Frequently asked questions

What is CVE-2017-18400?: CVE-2017-18400 is a high-severity vulnerability in Cpanel, classified under Command Injection. CVSS score: 7.8/10. Published 2019-08-02.
How severe is CVE-2017-18400?: High severity. CVSS v3 base score is 7.8 out of 10.