"Authentication still worked" even when the wrong hash was entered, Tenable Director of Reverse Engineering Carlos Perez wrote. "We had discovered a complete bypass of the authentication scheme." A separate technical analysis from Embedi, the security firm Intel credited with first disclosing the vulnerability, arrived at the same conclusion... Making matters worse, unauthorized accesses typically aren't logged by the PC because AMT has direct access to the computer's network hardware... The packets bypass the OS completely.
The article adds that Intel officials "said they expect PC makers to release a patch next week." And in the meantime? "Intel is urging customers to download and run this discovery tool to diagnose potentially vulnerable computers."
Saturday Ars Technica found more than 8,500 systems with an AMT interface exposed to the internet using the Shodan search engine -- over 2,000 in the United States -- adding that "many others may be accessible via organizational networks."