The Intel vPro/AMT features are not leveraged in the Poweredge servers, because of the iDrac. The T20 is the exception to this, but there does appear to be a patch in the works for it.
Hope this helps.
Check out the SSH - Intel AMT Vulnerability Tracking Page for some details.
Lenovo and HP have released advisory bulletins outlining their systems impacted by "Intels AMT fail" with expected BIOS release date to fix this epic fail.
Checked the Dell support site and couldn't find anything ! Really, it's about time Dell also released an advisory or secutity bulletin which also outlines impacted systems and expected release dates for the needed BIOS fix for this rather serious problem.
That's a terrific page, but here's a link that I didn't see there. It leads to a PDF with a range of BIOS availability dates for a slew of Dell...workstations. No mention of servers. Earliest date is 10 days from now, but some stretch into June.