Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities

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:

Security Impact Rating: Critical

CVE: CVE-2021-34795,CVE-2021-40112,CVE-2021-40113

Source:: Cisco Security Advisories