Microsoft security software detects and removes this threat.

The threat is a webpage that tries to exploit vulnerabilities in software on your PC. It can then try to download other malware.

It tries to exploit vulnerabilities in the following software:

  • Java
  • Adobe Flash Player
  • Adobe Acrobat Reader
  • Microsoft Silverlight
  • Internet Explorer.

Members of the Fiexp family belong to the exploit kit called Fiesta.

See the family description for HTML/Fiexp and our page on exploits for more information.

This threat might get into your PC if you visit a hacked or malicious website.

Find out ways that malware can get on your PC.  

What to do now

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find other, hidden malware.

Update Java, Adobe Acrobat and Reader, and Adobe Flash Player

Make sure you install all available updates. You can read more about these vulnerabilities and download software updates from these links:

You should remove older versions of Java, as keeping old and unsupported versions of Java on your PC is a serious security risk:

If you continue to get alerted about this threat, deleting your temporary Java files can help:

It's also important to keep your other software up to date:

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

Threat behavior

More information about this threat is available in the HTML/Fiexp family description.


Alerts from your security software may be the only symptom.


Alert level: Severe
First detected by definition: 1.173.896.0
Latest detected by definition: 1.173.896.0 and higher
First detected on: Apr 29, 2014
This entry was first published on: Apr 11, 2014
This entry was updated on: Aug 25, 2014

This threat is also detected as:
No known aliases