CVE-2021-37191

Q: How do I fix CVE-2021-37191?

Upgrade sinema remote connect server to 3.0 or later.

Q: Is CVE-2021-37191 being actively exploited?

Not that we know of. CVE-2021-37191 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.38% is the estimated probability that it will be exploited in the next 30 days. That is higher than 31% of all scored CVEs.

Q: How severe is CVE-2021-37191?

CVE-2021-37191 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-37191 affect?

Published advisories record a fix for sinema remote connect server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

4.3

CVSS v3

NVD

Description

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.

CWE-799

How to fix

Remediation Available

sinema remote connect serverNVD

Affected:< 3.0Fixed in:3.0CVE-2021-37191derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.38%probability of exploitation in 30 days

31stpercentile

Low risk: more likely to be exploited than 31% of all known CVEs.

References

Patch1

cert-portal.siemens.com

Related Vulnerabilities

Other CWE-799 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35621	High	7.5	2.3%	-	-
CVE-2016-6543	Medium	5.9	2.2%	-	-
CVE-2021-37910	Low	3.7	2.1%	-	Fix
CVE-2021-32705	Medium	5.3	1.7%	-	Fix
CVE-2021-32703	Medium	5.3	1.5%	-	Fix
CVE-2021-41177	High	8.1	1.5%	-	Fix

Common questions

How do I fix CVE-2021-37191?

Upgrade sinema remote connect server to 3.0 or later.

Is CVE-2021-37191 being actively exploited?

Not that we know of. CVE-2021-37191 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.38% is the estimated probability that it will be exploited in the next 30 days. That is higher than 31% of all scored CVEs.

How severe is CVE-2021-37191?

CVE-2021-37191 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-37191 affect?

Published advisories record a fix for sinema remote connect server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-23.