The remote SSH server is configured to allow either MD5 or 96-bit MAC algorithms, both of which are considered weak. (Source: Tenable Nessus)
As this issue is assessed as low severity, users may evaluate their environments and decide if updating is required.
This alert has come from: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-257314-security-enhancement-ssh-weak-mac-algorithms-enabled