Ethernet frame decryption via cleartext MACsec key
Published Jul 9, 2024 · Updated Aug 27, 2025
Information disclosure in Siemens RUGGEDCOM RST2228 and RST2228P before 5.9.0 allows remote authenticated users to obtain a MACsec key. The devices' web server returns the MACsec key in clear text to a logged-in low-privileged account instead of restricting access to the secret. Low-privileged web credentials and access to TCP ports 80 or 443 are required; the key permits decryption of Ethernet frames sent by authorized recipients.
Summary
What happened
Information disclosure in Siemens RUGGEDCOM RST2228 and RST2228P before 5.9.0 allows remote authenticated users to obtain a MACsec key. The devices' web server returns the MACsec key in clear text to a logged-in low-privileged account instead of restricting access to the secret. Low-privileged web credentials and access to TCP ports 80 or 443 are required; the key permits decryption of Ethernet frames sent by authorized recipients.
The record
- CVE
- CVE-2023-52238
- Published
- Jul 9, 2024
- Updated
- Aug 27, 2025
- Vendor
- Siemens
- Product
- RUGGEDCOM RST2228
- Classifications
- CWE-200, T1552
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 9, 2024CVE publishedPublication date reported by the CVE source.
- Aug 27, 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 <V5.9.0
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
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.
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Technologies
Your stack
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Your stack
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