What is CVE-2021-37177?

CVE-2021-37177 is a medium-severity vulnerability in Siemens Sinema Remote Connect Server, classified under Modification of Assumed-Immutable Data (MAID). CVSS score: 6.5/10. Published 2021-09-14.

How severe is CVE-2021-37177?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Siemens Sinema Remote Connect Server

CVE-2021-37177

A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.0 SP2). The status provided by the syslog clients managed by the affected software can be manipulated by an unauthenticated attacker in the same network of the affected system.

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.2th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.2% 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-471 — Modification of Assumed-Immutable Data (MAID)

References

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

Frequently asked questions

What is CVE-2021-37177?: CVE-2021-37177 is a medium-severity vulnerability in Siemens Sinema Remote Connect Server, classified under Modification of Assumed-Immutable Data (MAID). CVSS score: 6.5/10. Published 2021-09-14.
How severe is CVE-2021-37177?: Medium severity. CVSS v3 base score is 6.5 out of 10.