CVE-2021-44228

CVE-2021-44228, known as Log4Shell, is a critical security flaw in the popular Java-based logging library Log4j. It allows hackers to execute malicious code on affected systems by sending specially crafted log messages. This vulnerability can enable attackers to gain unauthorized access, steal data, or take control of servers. Because Log4j is widely used in many applications and services, the flaw posed a significant widespread threat. Fixing it involves updating Log4j to a version that patches the vulnerability and applying recommended security measures.