has attempted to exploit a known vulnerability in WinRAR (CVE-2018-20250) and attempted to gain remote code execution via a security bypass vulnerability (CVE-2017-11774).(Citation: Symantec Elfin Mar 2019)
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: has attempted to exploit a known vulnerability in WinRAR (CVE-2018-20250) and attempted to gain remote code execution via a security bypass vulnerability (CVE-2017-11774).(Citation: Symantec Elfin Mar 2019) ### Response: T1203.