Vulnerability issue in wlc

[Leftz]

Hi We have wlc. and got the below vulnerability message from tenable. Now I have two questions:

1, in addition to upgrading ios, there is other way to resolve it?

2. We scan all devices all the time, and we did not get the below warning message before, why the below warning message come to up this time scan? can we say scan standard change? Thank you

Cisco Wireless LAN Controller Secure Shell (SSH) Denial of Service Vulnerability (cisco-sa-20191016-wlc-ssh-dos)

According to its self-reported version, Cisco Wireless LAN Controller (WLC) is affected by a denial of service (DoS)

[Flavio Miranda]

Hi

    Yes, you did it wrong. This ACL permits everyting to access your WLC on port 443. Please, read this post all over again and see the part I talk about to have a management network from where you should manage your devices, wlc included.

This Access List must have a specific source and the WLC as destination. If you allow everything, why do you need the ACL in the first place?