What is CVE-2018-20599?

CVE-2018-20599 is a high-severity vulnerability in Ucms Project, classified under Code Injection. CVSS score: 8.8/10. Published 2018-12-30.

How severe is CVE-2018-20599?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Ucms Project

CVE-2018-20599

UCMS 1.4.7 allows remote attackers to execute arbitrary PHP code by entering this code during an index.php sadmin_fileedit action.

Vulnerability class: RCE (Remote Code Execution)

Published 2018-12-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: +0.000

Affected products

Ucms Project — versions 1.4.7

Weakness classification (CWE)

CWE-94 — Code Injection

References

github.com/AvaterXXX/CVEs/blob/master/ucms.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20599?: CVE-2018-20599 is a high-severity vulnerability in Ucms Project, classified under Code Injection. CVSS score: 8.8/10. Published 2018-12-30.
How severe is CVE-2018-20599?: High severity. CVSS v3 base score is 8.8 out of 10.