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However, even the most trusted tools can harbor dangerous secrets. In late 2020 and early 2021, the cybersecurity community turned its attention to a specific legacy version of this software: Screen 4.08.00. The phrase "screen 4.08.00 exploit" became a trending topic among vulnerability researchers and penetration testers, signifying a critical moment where a standard utility became a potential vector for privilege escalation.

You might assume that a vulnerability from 2017 is ancient history. Yet the continues to be relevant for several reasons:

screen -ls /var/tmp/.screen-exchange