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Ubuntu 25 OpenJDK 25 Important Security Threats USN-7995-1

ubuntu
Calendar Grey February 3, 2026
Dist Ubuntu Esm H88
Address critical issues in OpenJDK 25 for Ubuntu, including exploits that may lead to information theft and arbitrary code execution.
Several security issues were fixed in OpenJDK 25.

Summary

Several security issues were fixed in OpenJDK 25.

Software Description:

- openjdk-25: Open Source Java implementation

Details:

It was discovered that the RMI component of OpenJDK 25 would establish

RMI TCP endpoint connections to a remote host without setting an

endpoint identification algorithm. An unauthenticated remote attacker

could possibly use this issue to steal sensitive information.

(CVE-2026-21925)

Mingijung discovered that the AWT and JavaFX componenets of OpenJDK 25

could run programs if Desktop.browse() was supplied a filename as a

URI. An unauthenticated remote attacker could possibly use this issue

to execute arbitrary code. (CVE-2026-21932)

Zhihui Chen discovered that the Networking component of OpenJDK 25

was suceptible to a CRLF injection vulnerability via the HttpServer

class. An unauthenticated remote attacker could possibly use this

issue to modify files or leak sensitive information. (CVE-2026-21933)

Ireneusz Pastusiak discovered that the Security compon...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory remote access Ubuntu important information theft openjdk

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  openjdk-25-jdk                  25.0.2+10-1~25.10
  openjdk-25-jdk-headless         25.0.2+10-1~25.10
  openjdk-25-jre                  25.0.2+10-1~25.10
  openjdk-25-jre-headless         25.0.2+10-1~25.10
  openjdk-25-jre-zero             25.0.2+10-1~25.10
  openjdk-25-jvmci-jdk            25.0.2+10-1~25.10

Ubuntu 24.04 LTS
  openjdk-25-jdk                  25.0.2+10-1~24.04
  openjdk-25-jdk-headless         25.0.2+10-1~24.04
  openjdk-25-jre                  25.0.2+10-1~24.04
  openjdk-25-jre-headless         25.0.2+10-1~24.04
  openjdk-25-jre-zero             25.0.2+10-1~24.04
  openjdk-25-jvmci-jdk            25.0.2+10-1~24.04

Ubuntu 22.04 LTS
  openjdk-25-jdk                  25.0.2+10-1~22.04
  openjdk-25-jdk-headless         25.0.2+10-1~22.04
  openjdk-25-jre                  25.0.2+10-1~22.04
  openjdk-25-jre-headless         25.0.2+10-1~22.04
  openjdk-25-jre-zero             25.0.2+10-1~22.04
  openjdk-25-jvmci-jdk            25.0.2+10-1~22.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart Java
applications to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7995-1

CVE-2026-21925, CVE-2026-21932, CVE-2026-21933, CVE-2026-21945

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7995-1

Topics%20covered

Topics Covered

security advisory remote access Ubuntu important information theft openjdk

Package Information

https://launchpad.net/ubuntu/+source/openjdk-25/25.0.2+10-1~25.10
https://launchpad.net/ubuntu/+source/openjdk-25/25.0.2+10-1~24.04
https://launchpad.net/ubuntu/+source/openjdk-25/25.0.2+10-1~22.04

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