Authenticated login denial via invalid node name
Published May 15, 2023 · Updated Jan 23, 2025
Improper input validation in CODESYS V3 products before 3.5.18.40 or 4.7.0.0 allows remote authenticated users to block node-name logins. CmpNameServiceServer accepts a manipulated protocol packet or local configuration value that sets an invalid PLC node name, which later name-based logins reject. Successful authentication is required; discovery and logins by device or IP address remain available, limiting the interruption to node-name access.
Summary
What happened
Improper input validation in CODESYS V3 products before 3.5.18.40 or 4.7.0.0 allows remote authenticated users to block node-name logins. CmpNameServiceServer accepts a manipulated protocol packet or local configuration value that sets an invalid PLC node name, which later name-based logins reject. Successful authentication is required; discovery and logins by device or IP address remain available, limiting the interruption to node-name access.
The record
- CVE
- CVE-2022-22508
- Published
- May 15, 2023
- Updated
- Jan 23, 2025
- Vendor
- CODESYS GmbH
- Product
- CODESYS Control Runtime System Toolkit
- Classifications
- CWE-20, CWE-1288, T0814
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 15, 2023CVE publishedPublication date reported by the CVE source.
- Jan 23, 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=V0.0.0.0 <V3.5.18.40
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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