Cisco switches and routers running IOS 12.1 and earlier...
High severity
Unreviewed
Published
Apr 30, 2022
to the GitHub Advisory Database
•
Updated Jan 30, 2023
Description
Published by the National Vulnerability Database
May 3, 2001
Published to the GitHub Advisory Database
Apr 30, 2022
Last updated
Jan 30, 2023
Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence Numbers (ISNs), which allows remote attackers to spoof or hijack TCP connections.
References