CVE-2021-37191

MEDIUMNVD 4.34.3—

4.3

A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.0 SP2). An unauthenticated attacker in the same network of the affected system could brute force the usernames from the affected software.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 27.3%
KEV: Not listed

Published

September 14, 2021

Last Modified

April 23, 2025

References (2)

productcert@siemenshttps://cert-portal.siemens.com/productcert/pdf/ssa-334944.pdf
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-334944.pdf

Weakness Classification(1)

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

CWE-799

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 10:28 UTCEG score recompute
2026-05-26 10:28 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-37191?

CVE-2021-37191 is a medium vulnerability published on September 14, 2021. A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.0 SP2). An unauthenticated attacker in the same network of the affected system could brute force the usernames from the affected software.

When was CVE-2021-37191 disclosed?

CVE-2021-37191 was first published in the National Vulnerability Database on September 14, 2021, with the most recent update on April 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-37191 actively exploited?

CVE-2021-37191 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-37191?

CVE-2021-37191 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2021-37191?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-37191, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-37191

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CVE-2021-37191

📅 Published

🔄 Last Modified

🔗 References (2)