CVE-2026-21925

Publication date 20 January 2026

Last updated 3 February 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.8 · Medium

Score breakdown

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: RMI). Supported versions that are affected are Oracle Java SE: 8u471, 8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1; Oracle GraalVM for JDK: 17.0.17 and 21.0.9; Oracle GraalVM Enterprise Edition: 21.3.16. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data as well as unauthorized read access to a subset of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).

Status

Package Ubuntu Release Status
openjdk-9 25.10 questing Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
16.04 LTS xenial Ignored no longer supported by upstream
openjdk-13 25.10 questing Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by openjdk-17
openjdk-16 25.10 questing Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by openjdk-17
openjdk-17-crac 25.10 questing
Fixed 17.0.18+8-0ubuntu1~25.10
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
openjdk-18 25.10 questing Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Ignored superseded by openjdk-19
openjdk-21-crac 25.10 questing
Fixed 21.0.10+7-0ubuntu1~25.10
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
openjdk-21 25.10 questing
Fixed 21.0.10+7-1~25.10
24.04 LTS noble
Fixed 21.0.10+7-1~24.04
22.04 LTS jammy
Fixed 21.0.10+7-1~22.04
20.04 LTS focal
Fixed 21.0.10+7-1~20.04
openjdk-17 25.10 questing
Fixed 17.0.18+8-1~25.10.1
24.04 LTS noble
Fixed 17.0.18+8-1~24.04.1
22.04 LTS jammy
Fixed 17.0.18+8-1~22.04.1
20.04 LTS focal
Fixed 17.0.18+8-1~20.04
18.04 LTS bionic
Fixed 17.0.18+8-1~18.04
openjdk-25 25.10 questing
Fixed 25.0.2+10-1~25.10
24.04 LTS noble
Fixed 25.0.2+10-1~24.04
22.04 LTS jammy
Fixed 25.0.2+10-1~22.04
openjdk-8 25.10 questing
Fixed 8u482-ga~us1-0ubuntu1~25.10
24.04 LTS noble
Fixed 8u482-ga~us1-0ubuntu1~24.04
22.04 LTS jammy
Fixed 8u482-ga~us1-0ubuntu1~22.04
20.04 LTS focal
Fixed 8u482-ga~us1-0ubuntu1~20.04
18.04 LTS bionic
Fixed 8u482-ga~us1-0ubuntu1~18.04
16.04 LTS xenial
Fixed 8u482-ga~us1-0ubuntu1~16.04
openjdk-lts 25.10 questing
Fixed 11.0.30+7-1ubuntu1~25.10
24.04 LTS noble
Fixed 11.0.30+7-1ubuntu1~24.04
22.04 LTS jammy
Fixed 11.0.30+7-1ubuntu1~22.04
20.04 LTS focal
Fixed 11.0.30+7-1ubuntu1~20.04
18.04 LTS bionic
Fixed 11.0.30+7-1ubuntu1~18.04
openjdk-25-crac 25.10 questing
Fixed 25.0.2+10-0ubuntu1~25.10
24.04 LTS noble Not in release
22.04 LTS jammy Not in release

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Severity score breakdown

Parameter Value
Base score 4.8 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-8000-1
    • OpenJDK 8 vulnerabilities
    • 2 February 2026
    • USN-8001-1
    • OpenJDK 11 vulnerabilities
    • 2 February 2026
    • USN-8002-1
    • OpenJDK 21 vulnerabilities
    • 2 February 2026
    • USN-8003-1
    • CRaC JDK 21 vulnerabilities
    • 2 February 2026
    • USN-7995-1
    • OpenJDK 25 vulnerabilities
    • 2 February 2026
    • USN-7996-1
    • CRaC JDK 25 vulnerabilities
    • 2 February 2026
    • USN-7997-1
    • CRaC JDK 17 vulnerabilities
    • 2 February 2026
    • USN-7998-1
    • OpenJDK 17 vulnerabilities
    • 3 February 2026

Other references