CVE-2026-83403
Analyzed Analyzed - Analysis Complete

Oracle Identity Manager UI Takeover via HTTP Access

Publication date: 2026-10-20

Last updated on: 2026-11-03

Assigner: Oracle

Description
Vulnerability in the Oracle Identity Manager product of Oracle Fusion Middleware (component: OIM Legacy UI). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Identity Manager. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

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Meta Information

Published
2026-10-20
Last Modified
2026-11-03
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-83403
EUVD
EUVD-2026-106321

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
oracle identity_manager 12.2.1.4.0
oracle identity_manager 14.1.2.1.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This is a vulnerability in Oracle Identity Manager, a product under Oracle Fusion Middleware. It affects versions 12.2.1.4.0 and 14.1.2.1.0. The issue allows a low-privileged attacker with network access via HTTP to compromise the system. Successful exploitation could lead to a complete takeover of Oracle Identity Manager.

Impact Analysis

If you use Oracle Identity Manager versions 12.2.1.4.0 or 14.1.2.1.0, an attacker could gain control of the system. This could lead to unauthorized access, data breaches, or disruption of services. The high CVSS score indicates significant potential impact on confidentiality, integrity, and availability.

Compliance Impact

This vulnerability allows takeover of Oracle Identity Manager, which could lead to unauthorized access to sensitive identity and access management data. Such a compromise may violate compliance requirements under GDPR (data protection) and HIPAA (protected health information) by exposing confidential user data or enabling unauthorized modifications to access controls.

Mitigation Strategies

Apply the latest Oracle Identity Manager patches or updates provided by Oracle to address the vulnerability in the OIM Legacy UI component.

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