CVE-2013-2465

Java is like a universal “engine” that runs certain apps and web content. This flaw lets attackers use Java in a way that can break the protections Java normally relies on, and it has been seen in ransomware attacks.

Think of it as a weakness in the lock on the Java door—attackers don’t need to break in by normal means when the old version is present.

This matters if your business uses or runs Java Runtime Environment (JRE) on computers or servers that have Java SE 7 (Update 21 and earlier), Java SE 6 (Update 45 and earlier), Java SE 5.0 (Update 45 and earlier), or OpenJDK 7 installed.

Because this issue is in CISA KEV and used in ransomware campaigns, the practical risk is that attackers can target environments where old Java is reachable and present—especially in setups that allow untrusted content or remote access to Java-enabled applications.

This is RED urgent because it is confirmed to be used in ransomware campaigns and is listed in CISA’s Known Exploited Vulnerabilities program.

Act now to remove the vulnerable Java versions from your environment and apply the vendor-fixed updates; waiting increases the chance attackers will target your systems.