SonicWall warns of maximum-severity flaw in SMA1000 appliances

The flaw can let attackers reach internal parts of affected SonicWall appliances without logging in.

Researchers have seen attempts to exploit it, but have not confirmed that they succeeded.

The appliances help manage remote access, so a breach could give attackers a way into other systems.

SonicWall users should install the hotfix or disconnect affected appliances from the internet until they can.