Applies To:
  • CitectSCADA 6.10 spk B


HF610B38255 for CitectSCADA Version 6.10 Service Pack B

This hotfix provides a fix for:

Bug 38255 - Security vulnerability on citect port 20222 (ODBC port)

An intentionally malformed packet can cause a buffer overrun when directed at Citect's port 20222. This vulnerability has been secured. Users are reminded to run Citect as intended on a secure isolated network.
After applying this hotfix this port will be disabled by default.

An additional citect.ini parameter has been introduced should you wish to enable this port.

To your citect ini please add:

Files Affected:
  • client.dll         Copy to \Citect\Bin