What is CVE-2016-10833?

CVE-2016-10833 is a high-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 7.5/10. Published 2019-08-01.

How severe is CVE-2016-10833?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Cpanel

CVE-2016-10833

cPanel before 55.9999.141 mishandles username-based blocking for PRE requests in cPHulkd (SEC-104).

Vulnerability class: Broken Authentication

Published 2019-08-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

documentation.cpanel.net/display/CL/56+Change+Log (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2016-10833?: CVE-2016-10833 is a high-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 7.5/10. Published 2019-08-01.
How severe is CVE-2016-10833?: High severity. CVSS v3 base score is 7.5 out of 10.