Description
Vulnerability in Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE 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).
Published: 2026-10-20
Score: 4.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized Data Modification and Access
Action: Patch
AI Analysis

Impact

The vulnerability resides in the Security component of Oracle Java SE. An unauthenticated attacker with network access can exploit multiple protocols to modify data within the Java SE application, allowing unauthorized insert, update, or delete operations, and read access to a subset of data, impacting confidentiality and integrity as reflected in a CVSS 4.8 score. This weakness is an instance of improper access control (CWE-303) and information exposure (CWE-200), which together permit attackers to manipulate content and disclose sensitive data without proper checks.

Affected Systems

Affected versions are Oracle Java SE 8u503 (including the enterprise performance build), 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27. The flaw also applies to Oracle GraalVM for JDK 17.0.20.1 and 21.0.12.1, and Oracle GraalVM Enterprise Edition 21.3.19.1.1.

Risk and Exploitability

The CVSS base score of 4.8 indicates moderate risk; the EPSS score of <1% (0.0022) indicates a very low probability of exploitation, and the vulnerability is not listed in the CISA KEV catalog, implying no public evidence of exploitation yet. Based on the description, the likely attack vector is network-based and requires victim systems to expose vulnerable Java APIs, such as web services supplying data. An attacker can trigger data manipulation or unauthorized reads by sending crafted requests to those endpoints, without requiring authentication.

Generated by OpenCVE AI on October 27, 2026 at 23:18 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle Java SE update that contains the patch for CVE-2026-83381
  • Disable or remove any Java Web Start applications or applets that load code from untrusted sources, especially those relying on the Java sandbox
  • Limit network exposure of Java SE services, placing them behind firewalls or requiring authentication, and consider restricting the affected APIs to trusted clients
  • If a patch is not immediately available, configure the Java policy files to revoke unnecessary permissions for the affected components and isolate the application in a sandboxed environment

Generated by OpenCVE AI on October 27, 2026 at 23:18 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4861-1 openjdk-17 security update
History

Tue, 27 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-284

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title Unauthorized Data Modification via Oracle Java SE Security Component openjdk: Enhance SASL Authentication (Oracle CPU 2026-10)
Weaknesses CWE-303
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 21 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Oracle oracle Java Se
Vendors & Products Oracle oracle Java Se

Wed, 21 Oct 2026 07:15:00 +0000

Type Values Removed Values Added
Title Unauthorized Data Modification via Oracle Java SE Security Component
Weaknesses CWE-200
CWE-284

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE 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).
First Time appeared Oracle
Oracle java Se
CPEs cpe:2.3:a:oracle:java_se:11.0.32.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:25.0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:27:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:enterprise_performance:*:*:*
Vendors & Products Oracle
Oracle java Se
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Subscriptions

Oracle Java Se Oracle Java Se
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-27T13:41:03.875Z

Reserved: 2026-08-31T15:40:57.356Z

Link: CVE-2026-83381

cve-icon Vulnrichment

Updated: 2026-10-27T13:40:56.812Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:19:54.400

Modified: 2026-10-27T14:17:02.893

Link: CVE-2026-83381

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:23:39Z

Links: CVE-2026-83381 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T23:30:11Z

Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor

  • CWE-303

    Incorrect Implementation of Authentication Algorithm