What is CVE-2020-12784?

CVE-2020-12784 is a medium-severity vulnerability in Cpanel. CVSS score: 5.3/10. Published 2020-05-11.

How severe is CVE-2020-12784?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Cpanel

CVE-2020-12784

cPanel before 86.0.14 allows remote attackers to trigger a bandwidth suspension via mail log strings (SEC-505).

Published 2020-05-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.013 (68.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.2% 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

References

documentation.cpanel.net/display/CL/86+Change+Log (Vendor Advisory)
news.cpanel.com/cpanel-tsr-2020-0002-full-disclosure/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-12784?: CVE-2020-12784 is a medium-severity vulnerability in Cpanel. CVSS score: 5.3/10. Published 2020-05-11.
How severe is CVE-2020-12784?: Medium severity. CVSS v3 base score is 5.3 out of 10.