DEBIAN-CVE-2026-114820: Critical severity debian/openjdk-17 vulnerability

Published Oct 24, 2026

Updated

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u511-b32, 8u511-perf-b32, 11.0.33.0.2, 17.0.21.0.2, 21.0.13.0.2, 25.0.5.0.2, 27.0.1.0.2; Oracle GraalVM for JDK: 17.0.21.0.2 and 21.0.13.0.2; Oracle GraalVM Enterprise Edition: 21.3.20.0.2. 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 of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data as well as unauthorized access to critical data or complete access to all 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 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Affected Software

4 affected components

debian/openjdk-17*

debian/openjdk-21*

debian/openjdk-27*

Frequently Asked Questions

Which deployments should be prioritized for exposure assessment?

Prioritize network-reachable Java services that use JSSE APIs, including web services that pass externally supplied data to those APIs. Java client deployments are also in scope.

Does exploitation require authentication or user interaction?

No. The vulnerability is described as easily exploitable by an unauthenticated attacker with network access, with no user interaction required.

Which runtime versions are identified as affected?

Affected Oracle Java SE versions are 8u511-b32, 8u511-perf-b32, 11.0.33.0.2, 17.0.21.0.2, 21.0.13.0.2, 25.0.5.0.2, and 27.0.1.0.2. Affected GraalVM versions are 17.0.21.0.2 and 21.0.13.0.2 for GraalVM for JDK, and 21.3.20.0.2 for GraalVM Enterprise Edition.

What impact should incident responders consider if exploitation succeeds?

An attacker may gain unauthorized access to, or create, modify, or delete, critical data and all data accessible to the affected Java or GraalVM deployment. The vulnerability is rated critical with a 9.1 score.

DEBIAN-CVE-2026-114820: Critical severity debian/openjdk-17 vulnerability

Affected Software

Frequently Asked Questions

Which deployments should be prioritized for exposure assessment?

Does exploitation require authentication or user interaction?

Which runtime versions are identified as affected?

What impact should incident responders consider if exploitation succeeds?

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Frequently Asked Questions

Which deployments should be prioritized for exposure assessment?

Does exploitation require authentication or user interaction?

Which runtime versions are identified as affected?

What impact should incident responders consider if exploitation succeeds?