CMU restart via in-use certificate update
Published Mar 25, 2025 · Updated Mar 25, 2025
NULL pointer dereference in affected Hitachi Energy RTU500 CMU firmware allows remote authenticated users to restart the CMU. The IEC 60870-4-104 controlled-station certificate-update path dereferences a null pointer when certificates are replaced while active connections still use them. Exploitation requires authenticated, authorized access and an in-use certificate; the CMU restarts and then recovers automatically.
Summary
What happened
NULL pointer dereference in affected Hitachi Energy RTU500 CMU firmware allows remote authenticated users to restart the CMU. The IEC 60870-4-104 controlled-station certificate-update path dereferences a null pointer when certificates are replaced while active connections still use them. Exploitation requires authenticated, authorized access and an in-use certificate; the CMU restarts and then recovers automatically.
The record
- CVE
- CVE-2024-11499
- Published
- Mar 25, 2025
- Updated
- Mar 25, 2025
- Vendor
- Hitachi Energy
- Product
- RTU500 Series CMU Firmware
- Classifications
- CWE-476, T0816, T0814
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Mar 25, 2025CVE publishedPublication date reported by the CVE source.
- Mar 25, 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=13.4.1 <=13.4.4
- Affected versionversion=13.5.1 <=13.5.3
- Affected versionversion=13.5.3
- Affected versionversion=13.6.1
- Affected versionversion=13.7.1
What conditions does exploitation require?
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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