Privilege escalation via leaked session privileges
Published Sep 9, 2025 · Updated Mar 10, 2026
Improper privilege management in Siemens SINAMICS G220, S200, and S210 V6.4 allows local users to escalate privileges. The devices permit a factory reset without the required privilege check and retain prior-session privileges that can be reused to manipulate configuration data. Exploitation requires local access, active user interaction, and specific execution conditions; it can alter configuration and interrupt drive availability.
Summary
What happened
Improper privilege management in Siemens SINAMICS G220, S200, and S210 V6.4 allows local users to escalate privileges. The devices permit a factory reset without the required privilege check and retain prior-session privileges that can be reused to manipulate configuration data. Exploitation requires local access, active user interaction, and specific execution conditions; it can alter configuration and interrupt drive availability.
The record
- CVE
- CVE-2025-40594
- Published
- Sep 9, 2025
- Updated
- Mar 10, 2026
- Vendor
- Siemens
- Product
- SINAMICS S210
- Classifications
- CWE-269, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 9, 2025CVE publishedPublication date reported by the CVE source.
- Mar 10, 2026Record 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.
- Affected versionversion=0 <V6.4 HF2
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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