CVE-2021-43937

HIGHNVD 7.68.8▲

7.6

Elcomplus SmartPTT SCADA Server web application does not, or cannot, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

CVSS v3: 7.6
EG Score: 8.8(medium)
EPSS: 24.1%
KEV: Not listed

Published

April 29, 2022

Last Modified

November 21, 2024

References (2)

ics-cert@hqhttps://www.cisa.gov/uscert/ics/advisories/icsa-22-109-05
af854a3a-2127-422b-91ae-364da2661108https://www.cisa.gov/uscert/ics/advisories/icsa-22-109-05

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:23 UTCepss_batch
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2026-06-06 13:46 UTCepss_batch
2026-06-06 13:46 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
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2026-06-02 20:11 UTCepss_batch
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2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
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2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch

Frequently asked(5)

What is CVE-2021-43937?

CVE-2021-43937 is a high vulnerability published on April 29, 2022. Elcomplus SmartPTT SCADA Server web application does not, or cannot, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

When was CVE-2021-43937 disclosed?

CVE-2021-43937 was first published in the National Vulnerability Database on April 29, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-43937 actively exploited?

CVE-2021-43937 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-43937?

CVE-2021-43937 has a CVSS v3 base score of 7.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.8.

How do I remediate CVE-2021-43937?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-43937, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-43937

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-43937?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)