Authenticated code execution via expression eval
Published Sep 14, 2026 · Updated Sep 14, 2026
Eval injection in CONTEC CONPROSYS HMI System before 3.8.0 allows remote authenticated users to execute arbitrary PHP code. The expression-input handler accepts attacker-supplied executable PHP directives and evaluates them without neutralizing code syntax. A valid product login is required; successful exploitation grants code execution with the service's access, enabling data theft, tampering, or system destruction.
Summary
What happened
Eval injection in CONTEC CONPROSYS HMI System before 3.8.0 allows remote authenticated users to execute arbitrary PHP code. The expression-input handler accepts attacker-supplied executable PHP directives and evaluates them without neutralizing code syntax. A valid product login is required; successful exploitation grants code execution with the service's access, enabling data theft, tampering, or system destruction.
The record
- CVE
- CVE-2026-82789
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- CONTEC Co., Ltd.
- Product
- CONPROSYS HMI System (CHS)
- Classifications
- CWE-95, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 2026Record 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 <3.8.0
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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