Vulnerability in Oracle Graalvm
CVE-2026-21925
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).
EPSS: 0.002 (11.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Oracle Graalvm — versions 21.3.16
- Oracle Graalvm_for_jdk — versions 17.0.17, 21.0.9
- Oracle Jdk — versions 1.8.0, 11.0.29, 17.0.17
- Oracle Jre — versions 1.8.0, 11.0.29, 17.0.17
- Oracle Corporation Graalvm Enterprise Edition — versions 21.3.16
- Oracle Corporation Graalvm For Jdk — versions 17.0.17, 21.0.9
- Oracle Corporation Java Se — versions 8u471, 8u471-b50, 8u471-perf
References
- secalert_us@oracle.com (vendor-advisory, Vendor Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2026-21925?
- CVE-2026-21925 is a medium-severity vulnerability in Oracle Graalvm. CVSS score: 4.8/10. Published 2026-01-20.
- How severe is CVE-2026-21925?
- Medium severity. CVSS v3 base score is 4.8 out of 10.