CVE-2026-83409
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Authentication Bypass in Oracle Access Manager

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description
Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via SAML to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

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Meta Information

Published
2026-10-20
Last Modified
2026-10-27
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-83409
EUVD
EUVD-2026-106325

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
Oracle Corporation Oracle Access Manager 12.2.1.4.0
Oracle Corporation Oracle Access Manager 14.1.2.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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Executive Summary

This is a vulnerability in Oracle Access Manager, a product under Oracle Fusion Middleware. It affects versions 12.2.1.4.0 and 14.1.2.0.0. The issue allows an unauthenticated attacker with network access via SAML to compromise the system. Successful exploitation could lead to a complete takeover of Oracle Access Manager.

Detection Guidance

Detection of this vulnerability requires monitoring for unauthorized access attempts via SAML to Oracle Access Manager. Check logs for unusual SAML authentication requests or failed login patterns. Ensure Oracle Access Manager is updated to the latest patched version. No specific commands are provided in the available context.

Impact Analysis

If you use Oracle Access Manager versions 12.2.1.4.0 or 14.1.2.0.0, an attacker could exploit this flaw to gain full control of the system. This could allow unauthorized access to sensitive data, modification of system configurations, or disruption of services.

Compliance Impact

This vulnerability allows unauthenticated attackers to compromise Oracle Access Manager, potentially leading to unauthorized access to sensitive data. This could violate GDPR's data protection requirements and HIPAA's safeguards for protected health information, depending on the data processed by the affected system.

Mitigation Strategies

Apply the latest Oracle Access Manager patches or updates provided by Oracle to address the vulnerability in the Authentication Engine component.

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