CVE-2026-83403: High severity Oracle Oracle Identity Manager vulnerability

Published Oct 20, 2026

Updated

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).

Affected Software

3 affected components

Oracle Oracle Identity Manager=12.2.1.4.0, =14.1.2.1.0

Oracle Identity Manager=12.2.1.4.0

Oracle Identity Manager=14.1.2.1.0

Event History

Oct 20, 2026

CVE Published

via MITRE·09:23 PM

Data Sourced

via MITRE·09:23 PM

DescriptionSeverity

Data Sourced

via NVD·10:19 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

Which deployments are affected?

Affected supported versions are Oracle Identity Manager 12.2.1.4.0 and 14.1.2.1.0, specifically the OIM Legacy UI component.

What level of access does an attacker need?

An attacker needs network access to the target over HTTP and a low-privileged account. No user interaction is required, and the attack complexity is low.

What is the likely impact of successful exploitation?

Successful exploitation can result in takeover of Oracle Identity Manager, with high confidentiality, integrity, and availability impact.