A critical vulnerability that allows for unauthenticated remote code execution has been discovered in Apache Log4j 2, an open source Java logging tool. The Apache Software Foundation has identified the vulnerability as CVE-2021-44228.
“34% of companies [in portfolios] we examined had at least one exposed Java-based server. Not all of those use Log4j, but that gives a rough sense of the scale of exposure,” said Ethan Geil, Senior Director, Data and Research.