Applies To:
  • CitectSCADA 6.10 spk B


HF610B41749 for CitectSCADA Version 6.10 Service Pack B.

This hotfix provides a fix for:

Bug 36541 - Crash in unit mismatch detection code. When a mismatched unit rdb is used, and a unit with a network number is present on the client that is not present on the server, a crash will occur.

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

An intentionally malformed packet can cause a buffer overrun when directed at
Citect's ODBC port 20222. This vulnerability has been secured. Users are reminded to run CitectSCADA as intended on a secure isolated network.

After applying this hotfix, the ODBC 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 folder.
  • CTODBC32.dll                                        Copy to Common Files\Citect folder.
  •        Deploy to webserver if in use.