Attackers are constantly looking for vulnerabilities in systems and applications. Structured Exception Handling Overwrite Protection (SEHOP) blocks exploits that use the Structured Exception Handling overwrite technique, a common buffer overflow attack.
Configure the policy value for Computer Configuration >> Administrative Templates >> MS Security Guide >> 'Enable Structured Exception Handling Overwrite Protection (SEHOP)' to 'Enabled'. This policy setting requires the installation of the SecGuide custom templates included with the STIG package. 'SecGuide.admx' and 'SecGuide.adml' must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.