What is CVE-2020-3936?

CVE-2020-3936 is a critical-severity vulnerability in Unisoon Ultralog Express, classified under SQL Injection. CVSS score: 10.0/10. Published 2020-03-27.

How severe is CVE-2020-3936?

Critical severity. CVSS v3 base score is 10.0 out of 10.

SQL Injection in Unisoon Ultralog Express

CVE-2020-3936

UltraLog Express device management interface does not properly filter user inputted string in some specific parameters, attackers can inject arbitrary SQL command.

Vulnerability class: SQL Injection

Published 2020-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.2th percentile), scored 2026-10-01.

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: 0.012 · newest: 0.012 · change: 0.000

Affected products

Unisoon Ultralog Express — versions 1.4.0
Unisoon Ultralog Express
Unisoon Ultralog Express Firmware — versions 1.4.0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

www.twcert.org.tw/tw/cp-132-3451-7d9f0-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-3936?: CVE-2020-3936 is a critical-severity vulnerability in Unisoon Ultralog Express, classified under SQL Injection. CVSS score: 10.0/10. Published 2020-03-27.
How severe is CVE-2020-3936?: Critical severity. CVSS v3 base score is 10.0 out of 10.