![Updated] Log4Shell: Critical Severity Apache Log4j Remote Code Execution Being Actively Exploited (CVE-2021-44228 & CVE-2021-45046) – Kudelski Security Research Updated] Log4Shell: Critical Severity Apache Log4j Remote Code Execution Being Actively Exploited (CVE-2021-44228 & CVE-2021-45046) – Kudelski Security Research](https://cybermashup.files.wordpress.com/2021/12/screenshot.png?w=840)
Updated] Log4Shell: Critical Severity Apache Log4j Remote Code Execution Being Actively Exploited (CVE-2021-44228 & CVE-2021-45046) – Kudelski Security Research
logging-log4j-boot/spring/src/main/java/org/apache/logging/log4j/boot/spring/Log4jLoggingSystem.java at master · apache/logging-log4j-boot · GitHub
![ClassNotFoundException: org.apache.logging.log4j.util.StackLocator$FqcnCallerLocator on spring boot 2.3.4 and log4j 2.13.3 - Stack Overflow ClassNotFoundException: org.apache.logging.log4j.util.StackLocator$FqcnCallerLocator on spring boot 2.3.4 and log4j 2.13.3 - Stack Overflow](https://i.stack.imgur.com/tq1Ek.png)
ClassNotFoundException: org.apache.logging.log4j.util.StackLocator$FqcnCallerLocator on spring boot 2.3.4 and log4j 2.13.3 - Stack Overflow
![Java code of log4j with security lock, warning sign and digital numbers. Cyberspace and vulnerability. 3D rendering Stock Photo - Alamy Java code of log4j with security lock, warning sign and digital numbers. Cyberspace and vulnerability. 3D rendering Stock Photo - Alamy](https://c8.alamy.com/comp/2HB1DBD/java-code-of-log4j-with-security-lock-warning-sign-and-digital-numbers-cyberspace-and-vulnerability-3d-rendering-2HB1DBD.jpg)
Java code of log4j with security lock, warning sign and digital numbers. Cyberspace and vulnerability. 3D rendering Stock Photo - Alamy
![ClassNotFoundException: org.apache.logging.log4j.util.StackLocator$FqcnCallerLocator on spring boot 2.3.4 and log4j 2.13.3 - Stack Overflow ClassNotFoundException: org.apache.logging.log4j.util.StackLocator$FqcnCallerLocator on spring boot 2.3.4 and log4j 2.13.3 - Stack Overflow](https://i.stack.imgur.com/n0F2p.png)
ClassNotFoundException: org.apache.logging.log4j.util.StackLocator$FqcnCallerLocator on spring boot 2.3.4 and log4j 2.13.3 - Stack Overflow
Solved: zero-day exploit affecting the popular Apache Log4... - Page 2 - Adobe Support Community - 12585377
![Script to identify Log4J affected class for CVE-2021-44228 in a collection of ear/war/jar files · GitHub Script to identify Log4J affected class for CVE-2021-44228 in a collection of ear/war/jar files · GitHub](https://user-images.githubusercontent.com/1573775/145947136-d6befbda-1b09-49db-88d8-6c5d66ef641c.png)