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TI-2021-15256 Aliases CVE-2021-37194GHSA-3pr9-fm6f-mq6g

Unrestricted file upload in Siemens COMOS V10.2

Priority LOW 34CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

A vulnerability has been identified in COMOS V10.2 (All versions only if web components are used), COMOS V10.3 (All versions < V10.3.3.3 only if web components are used), COMOS V10.4 (All versions < V10.4.1 only if web components are used). The COMOS Web component of COMOS allows to upload and store arbitrary files at the webserver. This could allow an attacker to store malicious files.

Why it matters now

EPSS 0.00847 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensCOMOS V10.2All versions only if web components are used—No fix listedCNA
SiemensCOMOS V10.3All versions < V10.3.3.3 only if web components are used—No fix listedCNA
SiemensCOMOS V10.4All versions < V10.4.1 only if web components are used—No fix listedCNA
  • COMOS V10.2 VendorSiemens Affected All versions only if web components are used Fixed in — No fix listed CNA
  • COMOS V10.3 VendorSiemens Affected All versions < V10.3.3.3 only if web components are used Fixed in — No fix listed CNA
  • COMOS V10.4 VendorSiemens Affected All versions < V10.4.1 only if web components are used Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*10.3 to before 10.3.3.3; 10.4 to before 10.4.1VulnerableSiemens
cpe:2.3:a:siemens:comos:10.2:*:*:*:*:*:*:*10.2VulnerableSiemens
  • cpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:* Versions 10.3 to before 10.3.3.3; 10.4 to before 10.4.1 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:comos:10.2:*:*:*:*:*:*:* Versions 10.2 Vulnerable ·Siemens

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-37194
  2. 2026-10-03 Alias added: GHSA-3pr9-fm6f-mq6g

References

Patch 1

  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-20393 Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attack KEVCVSS 3.1CRITICAL 9.0
  • TI-2023-23262 Improper access control in Siemens COMOS CVSS 3.1CRITICAL 9.6
  • TI-2023-10103 Buffer overflow in Siemens COMOS V10.2 CVSS 3.1CRITICAL 10.0
  • TI-2023-23261 Buffer overflow in Siemens COMOS CVSS 3.1CRITICAL 9.8
  • TI-2023-25103 Improper access control in Siemens COMOS CVSS 3.1CRITICAL 9.6
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences