The product does not properly handle unexpected physical or environmental conditions that occur naturally or are artificially induced.
In requirements, be specific about expectations for how the product will perform when it exceeds physical and environmental boundary conditions, e.g., by shutting down.
Where possible, include independent components that can detect excess environmental conditions and have the capability to shut down the product.
Where possible, use shielding or other materials that can increase the adversary's workload and reduce the likelihood of being able to successfully trigger a security-related failure.
Consequences of this weakness are highly dependent on the role of affected components within the larger product.