Authenticated key theft via unrestricted PKI access
Published Aug 4, 2025 · Updated Aug 4, 2025
Incorrect permissions in CODESYS Control runtimes before 3.5.21.20 or 4.17.0.0 allow remote authenticated users to access PKI files. The optional CmpOpenSSL component fails to block SysFile, SysDir, and CODESYS file-transfer operations from reading or writing its PKI directory. Low-privileged runtime access is sufficient to steal private keys, install trusted certificates, or delete certificates and force unencrypted communication.
Summary
What happened
Incorrect permissions in CODESYS Control runtimes before 3.5.21.20 or 4.17.0.0 allow remote authenticated users to access PKI files. The optional CmpOpenSSL component fails to block SysFile, SysDir, and CODESYS file-transfer operations from reading or writing its PKI directory. Low-privileged runtime access is sufficient to steal private keys, install trusted certificates, or delete certificates and force unencrypted communication.
The record
- CVE
- CVE-2025-41659
- Published
- Aug 4, 2025
- Updated
- Aug 4, 2025
- Vendor
- CODESYS GmbH
- Product
- CODESYS Control for BeagleBone SL
- Classifications
- CWE-732, T1553.004, T1552.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 4, 2025CVE publishedPublication date reported by the CVE source.
- Aug 4, 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.
- Affected versionversion=0.0.0.0 <4.17.0.0
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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