CVE-2021-37192

Network device list disclosure to adjacent attackers

Published Sep 14, 2021 · Updated Apr 23, 2025

Information disclosure in SINEMA Remote Connect Server before 3.0 SP2 allows remote attackers to list devices a known user can manage. Siemens has not published the request, endpoint, or authorization error that exposes the device list. Exploitation requires adjacent-network access and knowledge of a known user's identity; disclosure is limited to managed-device identities.

CVSS severity4.3
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in SINEMA Remote Connect Server before 3.0 SP2 allows remote attackers to list devices a known user can manage. Siemens has not published the request, endpoint, or authorization error that exposes the device list. Exploitation requires adjacent-network access and knowledge of a known user's identity; disclosure is limited to managed-device identities.

The record

CVE
CVE-2021-37192
Published
Sep 14, 2021
Updated
Apr 23, 2025
Vendor
Siemens
Product
SINEMA Remote Connect Server
Classifications
CWE-200, T1018
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions < V3.0 SP2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Siemens · SINEMA Remote Connect Serverversion=All versions < V3.0 SP2

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.3NIST NVDAV:A/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1018Remote System Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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