The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per hexus.net: "…patched a vulnerability which has been open and exploitable in all its enterprise targeted Core pro…"
The Register's report, published 1 May 2017, states Intel is "patching a critical security flaw" in AMT (CVE-2017-5689) that had existed "since 2010", an exact match to the pin's stored 1 May 2017 date.
CyberScoop reports Lenovo and HP's firmware patch rollout plans following Intel's AMT vulnerability disclosure, noting "many users will have to wait more than a month for a fix" - corroborating coverage that follows the pin's stored 1 May 2017 disclosure date by a few days.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.