Java Runtime 1.8 U241 Jun 2026

: New checks ensure that "trust anchors" (root certificates) are proper CA certificates with the correct extensions. This is controlled by the jdk.security.allowNonCaAnchor TLS Server Certificate Matching

Java 1.8.0_241 is a with a small, manageable set of functional changes. It fixes a dangerous JNDI RMI vulnerability, updates timezone data, and improves NIO selector reliability. No major performance or compatibility drawbacks exist, though users of java.awt.Robot on Linux multi-monitor may hit a regression.

| Library | Version | 8u241 regression? | Notes | |------------------|----------|------------------|---------------------------| | Spring Boot | 2.2.4 | No | TLS config unchanged | | Hibernate | 5.4.12 | No | JDBC unaffected | | Apache Tomcat | 9.0.30 | No | Connector NIO fine | | Netty | 4.1.45 | No | Epoll bug fixed (benefit) | | Log4j2 | 2.13.0 | No | No ObjectInputStream use | java runtime 1.8 u241

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, also known as Java 8 Update 241 , was a critical security and maintenance release issued by Oracle on January 14, 2020. Core Identity & Purpose : New checks ensure that "trust anchors" (root

: Newer Java versions (like 17 or 21) include significant improvements in garbage collection and memory management.

If you are using 8u241 for legacy browser applets (and you really shouldn't be), create a deployment.rules XML file to allow specific signed JARs. The security slider in 8u241 will block everything by default. This link or copies made by others cannot be deleted

Use Windows AppLocker or similar tools to ensure that only authorized Java applications are allowed to execute via the u241 runtime. Conclusion

: Contains IANA time zone data 2019c and established a new security baseline for the JRE 8 family.