the lede is @ the bottom of the announcement:

> Exploitation and Public Announcements

> On August 15, 2016, Cisco was alerted to information posted online by the Shadow Brokers group, which claimed to possess disclosures from the Equation Group. The posted materials included exploits for firewall products from multiple vendors. The Cisco products mentioned were the Cisco PIX and Cisco ASA firewalls.

> Source

> The exploit of this vulnerability was publicly disclosed by the alleged Shadow Brokers group.