CVE-2021-32989: When a non-existent resource is requested, the LCDS LAquis SCADA application (version 4.3.1.1011 and prior) re

Q: How do I fix CVE-2021-32989?

laquis scada: upgrade to newer than 4.3.1.1011. Exact commands for each OS are on this page.

Q: Is CVE-2021-32989 being exploited?

CVE-2021-32989 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32989 affect?

CVE-2021-32989 affects laquis scada. Severity is critical (CVSS 9.3). 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.

Q: How urgent is CVE-2021-32989?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.3REMOTEUPGRADE

CVE-2021-32989 is a critical-severity flaw (CVSS 9.3) affecting laquis scada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-05-25
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: lcds

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-05-25 14:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

lcds laquis scada UPGRADE

Affected: <= 4.3.1.1011

Fixed in: newer than 4.3.1.1011

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy laquis-scada || rpm -q laquis-scada || laquis-scada --version

2. UPGRADE to newer than 4.3.1.1011 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade laquis-scada

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade laquis-scada

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32989?

laquis scada: upgrade to newer than 4.3.1.1011. Exact commands for each OS are on this page.

Is CVE-2021-32989 being exploited?

CVE-2021-32989 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32989 affect?

CVE-2021-32989 affects laquis scada. Severity is critical (CVSS 9.3). 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.

How urgent is CVE-2021-32989?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-10622 HIGH 7.8 UPGRADE LCDS LAquis SCADA Versions 4.3.1 and prior
CVE-2020-10618 MEDIUM 5.5 UPGRADE LCDS LAquis SCADA Versions 4.3.1 and prior

References

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