An Untrusted Search Path vulnerability in the ServiceInstance.dll library versions 1.0.15.119 and lower, as used in Bitdefender Antivirus Free 2020 versions prior to 1.0.15.138, allows an attacker to load an arbitrary DLL file from the search path.
The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.