Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions:

Log in with a default credential if the Telnet protocol is enabled
Perform command injection
Modify the configuration

For more information about these vulnerabilities, see the Details section of this advisory.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGr

Hardcoded SSH Key in Cisco Policy Suite Lets Remote Hackers Gain Root Access

https://thehackernews.com/2021/11/hardcoded-ssh-key-in-cisco-policy-suite.html

P.S. thx for the link dear subscriber ✌️