15 Most Exploited Vulnerabilities in 2021

HIPAA Journal

Steve Alder

The Five Eyes security agencies, an alliance of intelligence agencies from Australia, Canada, New Zealand, the United Kingdom, and the United States, have issued a joint advisory about the 15 vulnerabilities in software and operating systems that were most commonly targeted by nation-state hackers and cybercriminal organizations in 2021.

Throughout 2021, malicious cyber actors targeted newly disclosed critical software vulnerabilities in attacks against a wide range of industry sectors, including public and private sector organizations. 11 of the most routinely targeted vulnerabilities were publicly disclosed in 2021, although older vulnerabilities continue to be exploited. The 15 most exploited vulnerabilities include 9 that allow remote code execution, 2 elevation of privilege flaws, and security bypass, path traversal, arbitrary file reading, and arbitrary code execution flaws.

Top of the list was...

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