Systems and services that use the Java logging library, Apache Log4j between versions 2.0 and 2.14.1 are all affected, including many services and applications written in Java.

Attackers are actively exploiting a critical vulnerability in Apache Log4j, a logging library that’s used in potentially millions of Java-based applications, including web-based ones.

There’s an enormous amount of software vulnerable to the Log4j bug through Java software supply chains — and administrators and security pros likely don’t even know where to look for it.

A version of Apache Log4j, a Java log output library, that fixes the zero-day vulnerability 'CVE-2021-44228 ', commonly known as ' Log4Shell ', for remote code execution will be released on ...

Log4j is patched, but the exploits are just getting started As updates to affected software slowly roll out, other quicker fixes are a crucial stopgap ...

The challenge here is finding Log4j because of the way Java packaging works. It’s possible you have Log4j hiding somewhere in your application and don’t even know it.