Summary
The firmware of IOL MA8 EIP DI8 and IOL MA8 PN DI8 devices is affected by security vulnerabilities that can be used to bypass authentication. Code can be executed on the devices through command injection and local file inclusion. Path traversal and modified schemata can be used to read sensitive information such as password hashes or private keys from the devices.
Details
Impact
Authentication can be bypassed. Code with high access rights can be executed on the device so that the integrity of the device can be falsified. Sensitive information can be read out.
Mitigation
- Minimize network exposure for affected products and ensure that they are not accessible via the Internet.
- Isolate affected products from the corporate network.
- If remote access is required, use secure methods such as virtual private networks (VPNs).
Remediation
Phoenix Contact strongly recommends to update affected devices to firmware version 1.7.8.
Vulnerabilities 20
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Critical 9.8
Authentication Bypass in _account_log
An unauthenticated remote attacker can exploit an authentication bypass in the _account_log function to log in as an admin, even when accounts are properly configured.
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Critical 9.8
Remote code execution via uploading a malicious IODD file
An unauthenticated remote attacker can upload a malicious IODD file that places and executes a shell script with root privileges. The shell script remains active even after a reboot.
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High 8.8
Command Injection in /index.php/ajax/get_iodd_menu_info
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/ajax/get_iodd_menu_info endpoint using valid user or operator credentials allowing execution of commands with root privileges on the device.
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High 8.8
Command Injection in /index.php/ajax/get_iodd_port_info
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/ajax/get_iodd_port_info endpoint using user or operator credentials allowing execution of commands with root privileges on the device.
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High 8.8
Command Injection in /index.php/attached_devices_tab/do_upload
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/attached_devices_tab/do_upload endpoint using operator credentials allowing execution of commands with root privileges on the device.
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High 8.8
Command Injection in Field_Shadow_Password Class
A low-privileged remote attacker can exploit a command injection vulnerability in the Field_Shadow_Password class using operator credentials allowing execution of commands with root privileges on the device.
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High 8.8
Command Injection in /index.php/ajax/parameterManage
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/ajax/parameterManage endpoint using user credentials allowing execution of commands with root privileges on the device.
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High 8.8
Command Injection in /index.php/ajax/save_iodd_parameters
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/ajax/save_iodd_parameters endpoint using operator credentials allowing execution of commands with root privileges on the device.
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High 8.8
Local File Inclusion in /index.php/ajax/get_iodd_port_info
A low-privileged remote attacker can exploit a local file inclusion vulnerability in the /index.php/ajax/get_iodd_port_info endpoint using a valid user cookie allowing execution of arbitrary PHP code on the device.
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High 8.8
Local File Inclusion in /index.php/ajax/save_iodd_parameters
A low-privileged remote attacker can exploit a local file inclusion vulnerability in the /index.php/ajax/save_iodd_parameters endpoint using a valid operator cookie allowing execution of arbitrary PHP code on the device.
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High 8.8
Command Injection in /index.php/attached_devices_tab/ajax_remove_uploaded_iodd_files
A low-privileged remote attacker can exploit a command injection vulnerability in the /index.php/attached_devices_tab/ajax_remove_uploaded_iodd_files endpoint using operator credentials allowing execution of commands with root privileges on the device.
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High 8.8
Command Injection via GET in /api/status/data
A low-privileged remote attacker can exploit a command injection vulnerability in the /api/status/data endpoint by sending a crafted GET request with user credentials allowing execution of commands with root privileges on the device.
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High 8.1
Unauthorized IODD File Upload due to Improper Authorization
A low-privileged remote attacker can exploit improper authorization in the /index.php/attached_devices_tab/do_upload endpoint to upload IODD files to the device, potentially altering device behavior or causing system crashes.
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High 7.5
Path Traversal in /index.php/view_uploaded_iodd_file
An unauthenticated remote attacker can exploit a path traversal vulnerability in the /index.php/view_uploaded_iodd_file endpoint allowing the SSH server's private keys to be read.
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High 7.2
Command Injection via DELETE in /api/status/data
A high-privileged remote attacker can exploit a command injection vulnerability in the /api/status/data endpoint by sending a crafted DELETE request with admin credentials allowing execution of commands with root privileges on the device.
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High 7.2
Command Injection via GET in /api/iodd/config
A high-privileged remote attacker can exploit a command injection vulnerability in the /api/iodd/config endpoint by sending a crafted GET request with admin credentials allowing execution of commands with root privileges on the device.
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High 7.2
Command Injection via PUT in /api/iodd/config
A high-privileged remote attacker can exploit a command injection vulnerability in the /api/iodd/config endpoint by sending a crafted PUT request with admin credentials allowing execution of commands with root privileges on the device.
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High 7.2
Command Injection via GET in /api/datastorage/data
A high-privileged remote attacker can exploit a command injection vulnerability in the /api/datastorage/data endpoint by sending a crafted GET request with admin credentials allowing execution of commands with root privileges on the device.
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High 7.2
Command Injection via PUT in /api/datastorage/data
A high-privileged remote attacker can exploit a command injection vulnerability in the /api/datastorage/data endpoint by sending a PUT request with admin credentials allowing execution of commands with root privileges on the device.
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Medium 6.5
Information Disclosure via Schema Path Manipulation
A low-privileged remote attacker can manipulate the schema path parameter in the /index.php/diagnostics_tab/ajax_diag_table_rows endpoint using a valid user cookie allowing disclosure of all user password hashes.
Revision history
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#1.0.0
Initial release.
References
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PCSA-2026-00003
https://phoenixcontact.com/psirt
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Phoenix Contact advisory overview at CERT@VDE
https://certvde.com/de/advisories/vendor/phoenixcontact/
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Phoenix Contact application note
https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf
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VDE-2026-027: Phoenix Contact: Multiple vulnerabilities in the firmware of IOL MA8 EIP DI8 and IOL MA8 PN DI8 devices - HTML
https://certvde.com/en/advisories/VDE-2026-027