CVE-2026-21933
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-20

Last updated on: 2026-01-30

Assigner: Oracle

Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). 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. Easily exploitable 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 require human interaction from a person other than the attacker and while the vulnerability is in Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, attacks may significantly impact additional products (scope change). 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 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
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Meta Information
Published
2026-01-20
Last Modified
2026-01-30
Generated
2026-05-06
AI Q&A
2026-01-21
EPSS Evaluated
2026-05-05
NVD
CVE-2026-21933
EUVD
EUVD-2026-3576
Affected Vendors & Products
Showing 17 associated CPEs
Vendor Product Version / Range
oracle graalvm 21.3.16
oracle graalvm_for_jdk 17.0.17
oracle graalvm_for_jdk 21.0.9
oracle jdk 1.8.0
oracle jdk 1.8.0
oracle jdk 1.8.0
oracle jdk 11.0.29
oracle jdk 17.0.17
oracle jdk 21.0.9
oracle jdk 25.0.1
oracle jre 1.8.0
oracle jre 1.8.0
oracle jre 1.8.0
oracle jre 11.0.29
oracle jre 17.0.17
oracle jre 21.0.9
oracle jre 25.0.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-NVD-CWE-noinfo
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability affects Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition in the Networking component. It allows an unauthenticated attacker with network access to exploit the system via multiple protocols. Successful exploitation requires human interaction from someone other than the attacker. The vulnerability can lead to unauthorized update, insert, or delete access, as well as unauthorized read access to some accessible data. It can be exploited through APIs, such as web services supplying data to these APIs, and also affects Java deployments running sandboxed Java Web Start applications or applets that load untrusted code relying on the Java sandbox for security.


How can this vulnerability impact me? :

If exploited, this vulnerability can allow attackers to gain unauthorized read and write access to data accessible by Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. This means attackers could potentially update, insert, or delete data without permission, leading to data compromise or corruption. The attack requires network access and some user interaction, but no prior privileges are needed by the attacker.


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