Log4shell, or vulnerability in log4j - which products are vulnerable?

CVE-2021-44228, commonly referred to as Log4Shell, is a critical security vulnerability discovered in December 2021 that affects the Log4j library, widely used for logging in Java applications. This vulnerability allows attackers to execute arbitrary code on a server by sending specially crafted requests, effectively giving them control over the impacted system. The security issues associated with Log4j posed significant challenges for companies worldwide, leading to breaches in the security of numerous popular online services and systems. In response to this threat, developers of Log4j swiftly released patches, but the remediation process extended further with various informational activities aimed at raising awareness of this vulnerability among organizations. As a consequence of this incident, many companies had to reevaluate their security strategies and implement enhanced monitoring procedures. Furthermore, ongoing research into the Log4Shell vulnerability has revealed it to be one of the most dangerous threats of the past decade, necessitating a global response to software security problems.