The break here is scanner availability, not code execution. These ClamAV flaws can crash the Cisco Secure Endpoint scanning process on demand, so the security control stops checking files instead of flagging them cleanly.
Cisco says the affected connectors are Secure Endpoint Connector for Windows, Linux, and Mac, plus connectors distributed by Secure Endpoint Private Cloud. Windows is the sharper case because the scanner runs in a privileged security context there; Cisco also says it has released updates and there are no workarounds.
The practical risk is a loss of malware scanning inside the endpoint agent, not a broader platform compromise. That makes patching urgent because the protection gap lasts as long as the scanner keeps falling over.