There are some big holes in Microsoft Exchange that could let an attacker seize control of a machine and run arbitrary code. The holes could let in someone who wants to unleash a worm or a virus. Systems affected include those running Windows NT, XP, 2000.
Microsoft has some patches posted.
- <a href="http://www.kb.cert.org/vuls/byid?searchview&query=VU%23467036,VU%23575892,VU%23422156,VU%23435444"A description of the problems.
- Microsoft calls these security updates “Critical” — it's highest rating.
- Not surprisingly, the geeks at Slashdot have a few opinions.