"A potential vulnerability (CVE-2010-0104) has been identified with
certain HP Small Form Factor and Microtower PCs with Broadcom
Integrated NIC Firmware [in versions earlier than v18.104.22.168 and
earlier than v8.08]. The vulnerability could be remotely exploited to
execute arbitrary code."
Please see the link above for more information. HP has released softpaq
SP47557 to fix the vulnerability. Affected machines should be patched.