CVE-2021-37198Network attack vector

Forged requests via flawed CSRF prevention

Published Jan 11, 2022 · Updated May 22, 2025

Cross-site request forgery in Siemens COMOS Web 10.2, 10.3 before 10.3.3.3, and 10.4 before 10.4.1 allows remote attackers to submit forged requests. Siemens has not disclosed the affected endpoint or the validation operation that the CSRF control performs incorrectly. Exploitation requires user interaction and a deployment using COMOS Web; the forged request can act with the user's session, but the resulting action is undisclosed.

CVSS severity8.8
High
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

Cross-site request forgery in Siemens COMOS Web 10.2, 10.3 before 10.3.3.3, and 10.4 before 10.4.1 allows remote attackers to submit forged requests. Siemens has not disclosed the affected endpoint or the validation operation that the CSRF control performs incorrectly. Exploitation requires user interaction and a deployment using COMOS Web; the forged request can act with the user's session, but the resulting action is undisclosed.

The record

CVE
CVE-2021-37198
Published
Jan 11, 2022
Updated
May 22, 2025
Vendor
Siemens
Product
COMOS
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2022CVE publishedPublication date reported by the CVE source.
  2. May 22, 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 only if web components are used
  2. Affected versionversion=All versions < V10.3.3.3 only if web components are used
  3. Affected versionversion=All versions < V10.4.1 only if web components are used

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · COMOSversion=All versions only if web components are used; version=All versions < V10.3.3.3 only if web components are used; version=All versions < V10.4.1 only if web components are used

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
5.1NVDAV:N/AC:H/Au:N/C:P/I:P/A:P
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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