Java 7 Update 80 (7u80) is the final public release for Java SE 7, which reached end-of-life in 2015 and is considered highly insecure due to accumulated, unpatched vulnerabilities. It is susceptible to Remote Code Execution (RCE) and elevated privilege exploits, and it passed its built-in expiration date on August 14, 2015. For critical security updates and to remediate these risks, it is advised to upgrade to a modern, supported version such as Oracle's Java 17 (LTS).
: To prevent directory traversal and unauthorized file overwrites, the tool was updated to block the use of leading slashes ( ) and "dot-dot" ( ) path components in ZIP and JAR entry names. Certificate Blacklisting java 7 update 80 vulnerabilities
Java's security was originally built on a "sandbox" that restricted what untrusted code could do. Over the years, numerous "Sandbox Escapes" have been discovered. In Update 80, many of the APIs related to reflection and libraries like AWT and Swing have known bypasses that allow attackers to break out of the restricted environment. Key CVEs Affecting Legacy Java 7 Java 7 Update 80 (7u80) is the final
Java 7 update 80 was the last version to support Java Applets and Java Web Start without strong sandboxing. Attackers can host a malicious applet that escapes the sandbox (many public sandbox escape exploits for Java 7 exist, e.g., CVE-2013-0422, but similar patterns work even on update 80 because later fixes were not backported fully). : To prevent directory traversal and unauthorized file