A critical vulnerability was recently disclosed that affects Cisco IOS XE products. The consequences of this vulnerability may result in a remote, unauthenticated attacker to gain full administrator privileges. Specifics of the vulnerability can be found here. Please note that this vulnerability does NOT impact all Cisco products, only products running IOS XE.
Affected Products:
Catalyst Switches - 9000 series
Catalyst Wireless Controllers - 9800 series
Catalyst Access points - 9100 series
ASR 900 & 1000 series
NCS 4200 series
For a complete list, view Cisco IOS XE product list here.