“A Security Analysis of End-of-Life Java Versions: Case Study of Java 7 Update 80” Java 7 Update 80 (7u80), released in April

1. Known Exploits are Public: Since 2015, hundreds of CVEs (Common Vulnerabilities and Exposures) have been identified that affect Java 7. Because Oracle no longer patches 7u80, exploit code for these vulnerabilities is widely available on the dark web and in hacking toolkits. Running 7u80 is akin to leaving a key under the doormat; everyone knows exactly where to look.
2. Cryptographic Weaknesses: Cybersecurity standards evolve rapidly. Java 7 Update 80 lacks support for modern cryptographic algorithms and cipher suites required by current TLS standards. It is susceptible to vulnerabilities like Logjam or SLOTH, and its default encryption configurations are considered weak by 2024 standards.
3. Browser Incompatibility and Plugins: Most modern browsers (Chrome, Edge, Firefox) have completely removed support for the NPAPI plugins required to run Java applets. While this prevents web-based exploitation, it forces organizations to use outdated browsers (like Internet Explorer 11) to run legacy Java 7 apps, creating a double-layer of security risk.

1. Introduction – Java 7 lifecycle and Update 80 context
2. Methodology – Querying CVEs from NVD, Oracle advisories, exploit-db
3. Vulnerabilities affecting Java 7u80 (table format)
4. Exploitability in modern environments (browsers, servers, RMI, deserialization)
5. Risk assessment for continued use
6. Mitigations (upgrade to Java 8/11/17, disable applets, network isolation)
7. Conclusion

Best Practices for Java Security

• CVE-2015-4871 (RCE via RMI)
• CVE-2016-0483 (RCE via AWT)
• CVE-2016-3427 (RCE via JMX)