Alerts This Week
Warning Icon 1 1,308
Alerts This Week
Warning Icon 1 1,308

Ubuntu OpenJDK 11 Key Remote Code Execution Advisory USN-8001-1

ubuntu
Calendar Grey February 3, 2026
Dist Ubuntu Esm H88
Security issues fixed in OpenJDK 11 for Ubuntu. Essential updates recommended for improvements.
Several security issues were fixed in OpenJDK 11.

Summary

Several security issues were fixed in OpenJDK 11.

Software Description:

- openjdk-lts: Open Source Java implementation

Details:

It was discovered that the RMI component of OpenJDK 11 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 11

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 11

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 compo...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory code execution remote access Ubuntu important openjdk

Update Instructions

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

Ubuntu 25.10
  openjdk-11-jdk                  11.0.30+7-1ubuntu1~25.10
  openjdk-11-jdk-headless         11.0.30+7-1ubuntu1~25.10
  openjdk-11-jre                  11.0.30+7-1ubuntu1~25.10
  openjdk-11-jre-headless         11.0.30+7-1ubuntu1~25.10
  openjdk-11-jre-zero             11.0.30+7-1ubuntu1~25.10

Ubuntu 24.04 LTS
  openjdk-11-jdk                  11.0.30+7-1ubuntu1~24.04
  openjdk-11-jdk-headless         11.0.30+7-1ubuntu1~24.04
  openjdk-11-jre                  11.0.30+7-1ubuntu1~24.04
  openjdk-11-jre-headless         11.0.30+7-1ubuntu1~24.04
  openjdk-11-jre-zero             11.0.30+7-1ubuntu1~24.04

Ubuntu 22.04 LTS
  openjdk-11-jdk                  11.0.30+7-1ubuntu1~22.04
  openjdk-11-jdk-headless         11.0.30+7-1ubuntu1~22.04
  openjdk-11-jre                  11.0.30+7-1ubuntu1~22.04
  openjdk-11-jre-headless         11.0.30+7-1ubuntu1~22.04
  openjdk-11-jre-zero             11.0.30+7-1ubuntu1~22.04

Ubuntu 20.04 LTS
  openjdk-11-jdk                  11.0.30+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jdk-headless         11.0.30+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jre                  11.0.30+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-headless         11.0.30+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-zero             11.0.30+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  openjdk-11-jdk                  11.0.30+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jdk-headless         11.0.30+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jre                  11.0.30+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-headless         11.0.30+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-zero             11.0.30+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro

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-8001-1

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

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8001-1

Topics%20covered

Topics Covered

security advisory code execution remote access Ubuntu important openjdk

Package Information

https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.30+7-1ubuntu1~25.10
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.30+7-1ubuntu1~24.04
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.30+7-1ubuntu1~22.04

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here