What is CVE-2021-37191?

CVE-2021-37191 is a medium-severity vulnerability in Siemens Sinema Remote Connect Server, classified under CWE-799. CVSS score: 4.3/10. Published 2021-09-14.

How severe is CVE-2021-37191?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Siemens Sinema Remote Connect Server

CVE-2021-37191

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.

Published 2021-09-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Siemens Sinema Remote Connect Server — versions All versions < V3.0 SP2
Siemens Sinema Remote Connect Server — versions 3.0

Weakness classification (CWE)

CWE-799

References

cert-portal.siemens.com/productcert/pdf/ssa-334944.pdf (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-37191?: CVE-2021-37191 is a medium-severity vulnerability in Siemens Sinema Remote Connect Server, classified under CWE-799. CVSS score: 4.3/10. Published 2021-09-14.
How severe is CVE-2021-37191?: Medium severity. CVSS v3 base score is 4.3 out of 10.