I visited Dell website looking for a bios update for my OptiPlex 990 and came across this warning on the driver download webpage. it suggests it could be a wider problem affecting Intel machines:
"Dell is aware of an industry-wide vulnerability described in this security bulletin from Intel that can affect Dell PCs that support system manageability via Intel Active Management Technology (AMT), Intel Small Business Technology (SBT), or Intel Standard Manageability (ISM). We are actively developing BIOS firmware updates to help customers mitigate their vulnerability.
Find out if your system is impacted, review mitigation recommendations, and learn when a security patch for your system is expected to be available. View article"
"Dell is aware of an industry-wide vulnerability described in this security bulletin from Intel that can affect Dell PCs that support system manageability via Intel Active Management Technology (AMT), Intel Small Business Technology (SBT), or Intel Standard Manageability (ISM). We are actively developing BIOS firmware updates to help customers mitigate their vulnerability.
Find out if your system is impacted, review mitigation recommendations, and learn when a security patch for your system is expected to be available. View article"