What is CVE-2021-32989?

CVE-2021-32989 is a critical-severity vulnerability in Lcds Laquis Scada, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2022-05-25.

How severe is CVE-2021-32989?

Critical severity. CVSS v3 base score is 9.3 out of 10.

XSS in Lcds Laquis Scada

CVE-2021-32989

When a non-existent resource is requested, the LCDS LAquis SCADA application (version 4.3.1.1011 and prior) returns error messages which may allow reflected cross-site scripting.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-05-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.025 (84.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.025 · change: +0.001

Affected products

Lcds Laquis Scada
Lcds—leão Consultoria E Desenvolvimento De Sistemas Ltda Me Laquis Scada — versions All

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.cisa.gov/uscert/ics/advisories/icsa-21-208-04 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-32989?: CVE-2021-32989 is a critical-severity vulnerability in Lcds Laquis Scada, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2022-05-25.
How severe is CVE-2021-32989?: Critical severity. CVSS v3 base score is 9.3 out of 10.