What is CVE-2021-22859?

CVE-2021-22859 is a critical-severity vulnerability in Eic E-Document System, classified under SQL Injection. CVSS score: 9.8/10. Published 2021-03-17.

How severe is CVE-2021-22859?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Eic E-Document System

CVE-2021-22859

The users’ data querying function of EIC e-document system does not filter the special characters which resulted in remote attackers can inject SQL syntax and execute arbitrary commands without privilege.

Vulnerability class: SQL Injection

Published 2021-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.6th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000

Affected products

Eic E-Document System — versions 3.0.2
Excellent Infotek Corporation E-Document System — versions 0 3.0.2

Weakness classification (CWE)

CWE-89 — SQL Injection

References

www.twcert.org.tw/tw/cp-132-4517-51e25-1.html (Third Party Advisory)
gist.github.com/tonykuo76/807c838b75879b0d327782dfcd2c3bea (Third Party Advisory)
www.chtsecurity.com/news/c974fd28-c19b-4003-82f3-818904057496 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-22859?: CVE-2021-22859 is a critical-severity vulnerability in Eic E-Document System, classified under SQL Injection. CVSS score: 9.8/10. Published 2021-03-17.
How severe is CVE-2021-22859?: Critical severity. CVSS v3 base score is 9.8 out of 10.