Description
A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets can allow for denial-of-service (DoS).
Recommended action
Apply updates per vendor instructions.
CISA remediation due date for U.S. federal agencies: 17 Mar 2022.
Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.