These vulnerabilities primarily span three technical categories:
Insecure deserialization frequently results in RCE, bypassing security managers entirely. 3. Java Web Start and Applet Flaws (Deployment Stack)
| CVE ID | Description | Impact | |--------|-------------|--------| | | Apache Commons Collections deserialization gadget (used in many Java apps, but Java 7’s standard libraries + third‑party libs make exploitation trivial). | Unauthenticated RCE | | CVE-2016-0636 | Exploits JMX/MBean deserialization issues (affects Java 7 update 80). | RCE | | CVE-2017-5644 | Apache POI & Java serialization – allows remote attacker to execute arbitrary code via crafted serialized objects. | RCE | | CVE-2018-2826 (part of the Spring4Shell family) | Not in core Java, but Java 7’s reflection APIs and classloading issues are leveraged. Java 7 lacks newer security manager improvements. | RCE | | CVE-2019-2725 | Oracle WebLogic (runs on Java 7) – deserialization flaw. Java 7 update 80 is vulnerable. | RCE | | CVE-2020-1472 (ZeroLogon) | Affects Windows domain controllers, but Java 7 apps often authenticate via NTLM – the Java 7 implementation is unpatched, leading to escalation. | Privilege escalation | | CVE-2022-21349 (Java SE 7 – after EOL) | Deserialization in JNDI/RMI. No fix for Java 7. | RCE |
Applications running on Java 7u80 are highly susceptible to Man-in-the-Middle (MitM) attacks, allowing hackers to decrypt sensitive corporate traffic. The Business Impact of Running Java 7u80 java 7 update 80 vulnerabilities
Even as 7u80 was released, security researchers were actively discovering new methods to bypass the security patches included in the update. The nature of Java’s reflection capabilities made it a "cat-and-mouse" game for Oracle.
Java 7 Update 80 is an archival software version that belongs in legacy documentation, not modern production environments. The sheer volume of unpatched Remote Code Execution and cryptographic vulnerabilities makes any system running u80 a prime target for automated malware and ransomware campaigns. Organizations must prioritize auditing their infrastructure, identifying hidden u80 runtimes, and executing a migration or commercial containment strategy immediately.
If you absolutely cannot change the application code, shift away from the public Oracle Java 7u80 distribution. | Unauthenticated RCE | | CVE-2016-0636 | Exploits
At the time of its release, Update 80 was the most secure version of Java 7 available. However, in the realm of cybersecurity, "secure" is a relative and temporary state. Because Oracle ceased providing free public security patches for Java 7 after 7u80, any vulnerability discovered since mid-2015 remains unpatched in this version for the general public.
Because Java 7u80 was the last public release, every single vulnerability discovered in the Java 7 baseline since April 2015 remains unpatched in u80 installations. This includes dozens of Common Vulnerabilities and Exposures (CVEs) with high to critical CVSS (Common Vulnerability Scoring System) scores.
For organizations that cannot immediately migrate away from Java 7u80, several risk reduction measures should be implemented: Java 7 lacks newer security manager improvements
Specific CVEs found in 7u80 include:
Java 8 maintains a high level of backward compatibility with Java 7, making it the easiest initial upgrade target if a leap to Java 17 or 21 is too complex. Step 2: Utilize Extended Third-Party Support
Although discovered shortly after public updates ceased, this flaw impacts the Java Cryptography Extension (JCE) component within Java 7u80.