CVE-2026-83189

Received Received - Intake

Oracle User Management Privilege Escalation

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Oracle

Description

Vulnerability in the Oracle User Management product of Oracle E-Business Suite (component: Proxy User Delegation). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle User Management. Successful attacks of this vulnerability can result in takeover of Oracle User Management. 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

EPSS Scores

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Meta Information

Published

2026-09-15

Last Modified

2026-09-15

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83189

EUVD

EUVD-2026-79541

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	user_management	From 12.2.3 (inc) to 12.2.15 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle User Management within Oracle E-Business Suite. It allows a low-privileged attacker with network access to take over the Oracle User Management component. The attack is possible via HTTP and can result in full compromise of the system.

Detection Guidance

This vulnerability affects Oracle User Management in Oracle E-Business Suite versions 12.2.3 to 12.2.15. Detection requires checking for unauthorized proxy user delegation attempts via HTTP. Oracle recommends reviewing access logs for unusual delegation activities and applying the latest security patches.

Impact Analysis

If exploited, this vulnerability can lead to complete takeover of Oracle User Management, potentially allowing attackers to gain unauthorized access, modify data, or disrupt services. This could affect confidentiality, integrity, and availability of critical business data.

Compliance Impact

This vulnerability allows low-privileged attackers to compromise Oracle User Management, potentially leading to unauthorized access and control. Such breaches could result in unauthorized exposure or manipulation of sensitive data, which may violate compliance requirements under GDPR (data protection) and HIPAA (health information confidentiality).

Mitigation Strategies

Apply the latest Oracle E-Business Suite patches for Oracle User Management component immediately. Restrict network access to HTTP ports for Oracle User Management. Review and remove unnecessary proxy user delegation privileges. Monitor for unusual activity in Oracle User Management logs.

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