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Glossary: Security Fundamentals

Log4Shell

Also written: Log4j, Log4j2, CVE-2021-44228

CVE-2021-44228, a 2021 bug in Log4j, a Java logging library, that let an attacker run code on a server just by getting it to log crafted text. It scores 10.0 and is in KEV.

Where the book teaches it

Related terms

CVE (Common Vulnerabilities and Exposures)CVSS (Common Vulnerability Scoring System)KEV (Known Exploited Vulnerabilities)