What is CVE-2018-20128?

CVE-2018-20128 is a high-severity vulnerability in Usualtool Usualtoolcms, classified under Path Traversal. CVSS score: 7.5/10. Published 2018-12-13.

How severe is CVE-2018-20128?

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

Path Traversal in Usualtool Usualtoolcms

CVE-2018-20128

An issue was discovered in UsualToolCMS v8.0. cmsadmin\a_sqlback.php allows remote attackers to delete arbitrary files via a backname[] directory-traversal pathname followed by a crafted substring.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2018-12-13 · 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:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.015 (74.1th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.1% 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

Usualtool Usualtoolcms — versions 8.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

www.iwantacve.cn/index.php/archives/90/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20128?: CVE-2018-20128 is a high-severity vulnerability in Usualtool Usualtoolcms, classified under Path Traversal. CVSS score: 7.5/10. Published 2018-12-13.
How severe is CVE-2018-20128?: High severity. CVSS v3 base score is 7.5 out of 10.