A vulnerability (CVE-2021-4034) in Polkit's pkexec has been weaponized in the wild. This vulnerability is present in the default configuration of all major Linux distributions and can be exploited to gain full root privileges on the system. 

For a complete description of the vulnerabilities and effected systems, visit PwnKit: Local Privilege Escalation Vulnerability Discovered in polkit’s pkexec (CVE-2021-4034) 

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