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CVE-2021-3156: Heap-Based Buffer Overflow in Sudo (Baron Samedit)
CVE-2021-44228: Apache Log4j2 Zero-Day Exploited in the Wild (Log4Shell)
Remote Unauthenticated Code Execution Vulnerability in OpenSSH Server (regreSSHion)
PwnKit: Local Privilege Escalation Vulnerability Discovered in polkit's pkexec (CVE-2021-4034)
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