Safety password disclosure via reversible obfuscation
Published May 13, 2025 · Updated May 13, 2025
Weak password obfuscation in all Siemens SIRIUS 3RK3 MSS and 3SK2 Safety Relays allows remote attackers to recover safety passwords. The devices transmit or store safety passwords using reversible obfuscation, so PROFINET eavesdropping or serial reads expose recoverable data. Reachability requires access to the PROFINET network or serial interface; the recovered password protects only against inadvertent operating errors, not malicious access.
Summary
What happened
Weak password obfuscation in all Siemens SIRIUS 3RK3 MSS and 3SK2 Safety Relays allows remote attackers to recover safety passwords. The devices transmit or store safety passwords using reversible obfuscation, so PROFINET eavesdropping or serial reads expose recoverable data. Reachability requires access to the PROFINET network or serial interface; the recovered password protects only against inadvertent operating errors, not malicious access.
The record
- CVE
- CVE-2025-24007
- Published
- May 13, 2025
- Updated
- May 13, 2025
- Vendor
- Siemens
- Product
- SIRIUS 3RK3 Modular Safety System (MSS)
- Classifications
- CWE-327, T1552
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 13, 2025CVE publishedPublication date reported by the CVE source.
- May 13, 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?
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- Affected versionversion=0 <*
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What is affected?
Published CVSS scores
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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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