
The clr strict security option can be disabled for backward compatibility, but this is not recommended. clr strict security is enabled by default, and treats SAFE and EXTERNAL_ACCESS assemblies as if they were marked UNSAFE. Beginning with SQL Server 2017 (14.x), an sp_configure option called clr strict security is introduced to enhance the security of CLR assemblies. A CLR assembly created with PERMISSION_SET = SAFE may be able to access external system resources, call unmanaged code, and acquire sysadmin privileges. NET Framework, which is no longer supported as a security boundary.


CLR uses Code Access Security (CAS) in the.
