What is CVE-2020-21481?

CVE-2020-21481 is a high-severity vulnerability in Rgcms Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2021-09-15.

How severe is CVE-2020-21481?

High severity. CVSS v3 base score is 7.2 out of 10.

Arbitrary file upload in Rgcms Project

CVE-2020-21481

An arbitrary file upload vulnerability in RGCMS v1.06 allows attackers to execute arbitrary code via a crafted .txt file which is later changed to a PHP file.

Vulnerability class: Unrestricted File Upload

Published 2021-09-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (75.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Rgcms Project — versions 1.06

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.porlockz.com/A-arbitrary-file-upload-vulnerability-in-RGCMS-V1-06/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-21481?: CVE-2020-21481 is a high-severity vulnerability in Rgcms Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2021-09-15.
How severe is CVE-2020-21481?: High severity. CVSS v3 base score is 7.2 out of 10.