Answer
This vulnerability is now detected by GFI LanGuard and can be patched.
- Update LanGuard with the most recent Definitions (Configuration > Program Updates > Check for Updates)
- Once the update finishes LanGuard will be able to patch the vulnerability.
- You can confirm it has been downloaded by going to File > Configuration > Scanning Profile Editor (CTRL + P)
- Click on Patches
- Type in the search field MS14-021 and click Find