VPN connection disclosure via an undisclosed mechanism
Published Sep 14, 2021 · Updated Apr 23, 2025
Information disclosure in Siemens SINEMA Remote Connect Server before 3.0 SP2 allows attackers to retrieve a known user's VPN connection. Siemens has not published the affected endpoint or the operation that returns the connection, leaving the implementation mechanism undisclosed. Exploitation requires access from the same network but no authentication or user interaction, and the documented consequence is limited to disclosure.
Summary
What happened
Information disclosure in Siemens SINEMA Remote Connect Server before 3.0 SP2 allows attackers to retrieve a known user's VPN connection. Siemens has not published the affected endpoint or the operation that returns the connection, leaving the implementation mechanism undisclosed. Exploitation requires access from the same network but no authentication or user interaction, and the documented consequence is limited to disclosure.
The record
- CVE
- CVE-2021-37190
- Published
- Sep 14, 2021
- Updated
- Apr 23, 2025
- Vendor
- Siemens
- Product
- SINEMA Remote Connect Server
- Classifications
- CWE-200
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 14, 2021CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=All versions < V3.0 SP2
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo