A critical vulnerability (CVE-2021-44228, CVSS score 10) was identified in the Java logging library Apache Log4j 2. Apache Log4j2 2.14.1 and below are susceptible to a remote code execution vulnerability where a remote attacker can leverage this vulnerability to take full control of a vulnerable machine.
Apache Log4j is used in many Java-based applications, making this vulnerability potentially affecting lots of organizations. As we continue to gain a deeper understanding of the impact of this threat, we will publish technical information to help you detect, investigate, and mitigate attacks. We will provide updates with more information and protection details as they become available.
Update at 2021-12-14: New, related CVE-2021-45046 has been disclosed and mitigations are included in this post.