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IMPORTANT - Easily Protect your PC and your Client's against this ZERO DAY exploit

By Andrew Pollack on 12/30/2005 at 11:35 AM EST

A flaw in a special kind of image viewer for viewing WMF files represents an unpatched security risk -- and that risk has been exploited in the wild already. All someone has to do is send you an email with an image of this kind containing the exploit to infect your machine. The way worms and viruses work, the person you get the email from may not have even known they sent it.

To protect your computer, simply click "Start" then "run" and type "regsvr32 /u shimgvw.dll" and click "OK". This will "unregister" the viewer which contains the flaw. You'll be unable to view WMF files, but very few of these are used. It is unlikely you'll notice a difference.


Unlike most worms and viruses, this is one which to which the Lotus Notes client is also susceptible because it also uses Microsoft's viewer library for these kind of files.

Note: Thanks go to Ken Yee for pointing out this easy fix.

There are  - loading -  comments....

spoke too soonBy Ken Yee on 12/30/2005 at 01:10 PM EST
Look at Rich's blog...we need a way to disable inline images on the Notes
this caused a problem...By Bob Balaban on 12/30/2005 at 02:36 PM EST
I did exactly as you recommend, and now Notes won't open regular jpeg
attachments (though it will view them)
you have to have a 3rd party image viewer installedBy Ken Yee on 12/30/2005 at 06:16 PM EST
The logic goes something like:
- if a program is registered to handle the .jpg extension, launch it
- else use Windows Explorer's preview crap shell to launch it (shimgvw.dll :-)
Why doesn't this get more attention--easy fix doesnt workBy MarvinK on 01/03/2006 at 03:16 PM EST
IBM isnt saying much, but the registry hack doesnt help Lotus Notes. Microsoft
isnt releasing their patch until next Tuesday. Lotus needs to address--or at
least acknowledge this.

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