Concern about OS Upgrade,

Hello guys,

Following this vulnerability, Fortinet: Hardcoded cryptographic key in the FortiGuard services communication protocol,  affecting FortiOS 6.0.8 and below mostly, my box is currently "affected". In reality I dont use the feature, it is disabled, so my concern is if I need to still upgrade the box to a safer version or I can leave it as soon as I dont use that feature.

Many thanks!,