What is CVE-2020-20670?

CVE-2020-20670 is a high-severity vulnerability in Zkea Zkeacms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2021-09-13.

How severe is CVE-2020-20670?

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

Arbitrary file upload in Zkea Zkeacms

CVE-2020-20670

An arbitrary file upload vulnerability in /admin/media/upload of ZKEACMS V3.2.0 allows attackers to execute arbitrary code via a crafted HTML file.

Vulnerability class: Unrestricted File Upload

Published 2021-09-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (77.0th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.0% 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

Zkea Zkeacms — versions 3.2.0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

github.com/yilezhu/Czar.Cms/issues/6 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-20670?: CVE-2020-20670 is a high-severity vulnerability in Zkea Zkeacms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2021-09-13.
How severe is CVE-2020-20670?: High severity. CVSS v3 base score is 8.8 out of 10.