CVE-2021-32989Network attack vector

Unauthenticated script execution via reflected error content

Published May 25, 2022 · Updated Apr 16, 2025

Reflected XSS in LCDS LAquis SCADA 4.3.1.1011 and earlier allows remote attackers to execute script via a nonexistent-resource request. The web server places attacker-controlled resource text into an error response without neutralizing it for HTML output. The web interface must be reachable; no authentication is required, and execution is confined to the browser context that renders the response.

CVSS severity9.3
Critical
EPSS probability2.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in LCDS LAquis SCADA 4.3.1.1011 and earlier allows remote attackers to execute script via a nonexistent-resource request. The web server places attacker-controlled resource text into an error response without neutralizing it for HTML output. The web interface must be reachable; no authentication is required, and execution is confined to the browser context that renders the response.

The record

CVE
CVE-2021-32989
Published
May 25, 2022
Updated
Apr 16, 2025
Vendor
LCDS - Leão Consultoria e Desenvolvimento de Sistemas Ltda ME
Product
LAquis SCADA
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All <=4.3.1.1011

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LCDS - Leão Consultoria e Desenvolvimento de Sistemas Ltda ME · LAquis SCADAversion=All <=4.3.1.1011

Published CVSS scores

9.3CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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