How severe is CVE-2021-32989?

CVE-2021-32989 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2021-32989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32989?

CVE-2021-32989 affects Lcds Laquis Scada. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32989?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-32989 published?

CVE-2021-32989 was published on 2022-05-25 and last updated on 2026-06-17.

CVE-2021-32989

CVE-2021-32989 is a critical-severity vulnerability in Lcds Laquis Scada with a CVSS 3.x base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
CVSS v2: 4.3
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Lcds Laquis Scada
Published: 2022-05-25
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-32989?: CVE-2021-32989 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2021-32989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32989?: CVE-2021-32989 affects Lcds Laquis Scada. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32989?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-32989 published?: CVE-2021-32989 was published on 2022-05-25 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-208-04

Affected products (1)

cpe:2.3:a:lcds:laquis_scada:*:*:*:*:*:*:*:*

More vulnerabilities in Lcds Laquis Scada

CVE-2018-18998 — Critical (CVSS 9.8): LCDS Laquis SCADA prior to version 4.1.0.4150 uses hard coded credentials, which may allow an attacker unauthorized…
CVE-2018-18996 — Critical (CVSS 9.8): LCDS Laquis SCADA prior to version 4.1.0.4150 allows taking in user input without proper authorization or sanitation,…
CVE-2018-17897 — Critical (CVSS 9.8): LAquis SCADA Versions 4.1.0.3870 and prior has several integer overflow to buffer overflow vulnerabilities, which may…
CVE-2018-17895 — Critical (CVSS 9.8): LAquis SCADA Versions 4.1.0.3870 and prior has several out-of-bounds read vulnerabilities, which may allow remote code…
CVE-2018-17893 — Critical (CVSS 9.8): LAquis SCADA Versions 4.1.0.3870 and prior has an untrusted pointer dereference vulnerability, which may allow remote…
CVE-2018-18992 — High (CVSS 8.8): LCDS Laquis SCADA prior to version 4.1.0.4150 allows taking in user input without proper sanitation, which may allow an…

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