NSA exploit from ” The Shadow Brokers ” leak that affects older versions of Cisco System firewalls can work against newer models as well. ExtraBacon exploit leveraged a zero-day vulnerability in the Simple Network Messaging Protocol (SNMP) code of Cisco’s ASA software that could allow “an unauthenticated, remote attacker to cause a reload of the affected system” Cisco engineers have provided workarounds that help ASA customers detect and stop ExtraBacons attacks, though the multi-billion dollar company has yet to release software updates to address the flaw completely.
Source: https://thehackernews.com/2016/08/cisco-firewall-hack.html