CVE-2026-83040

Analyzed Analyzed - Analysis Complete

Oracle WebCenter Portal Authentication Bypass

Publication date: 2026-09-15

Last updated on: 2026-09-23

Assigner: Oracle

Description

Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Portlet Services). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Oracle WebCenter Portal. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle WebCenter Portal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. CVSS 3.1 Base Score 9.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-15

Last Modified

2026-09-23

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83040

EUVD

EUVD-2026-79368

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	webcenter_portal	12.2.1.4.0
oracle	webcenter_portal	14.1.2.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle WebCenter Portal, a middleware product. It allows an unauthenticated attacker to remotely compromise the system via SOAP requests. The attack requires user interaction and can lead to full takeover of the portal. The vulnerability has a high CVSS score of 9.6 due to its impact on confidentiality, integrity, and availability.

Detection Guidance

This vulnerability requires manual detection as no specific commands are provided in the CVE details. Check Oracle WebCenter Portal logs for unusual SOAP requests or unauthorized access attempts. Monitor network traffic for suspicious activity targeting the Oracle WebCenter Portal component.

Impact Analysis

An attacker could exploit this to gain control of your Oracle WebCenter Portal, potentially accessing sensitive data, modifying content, or disrupting services. Since attacks may impact additional products, the risk extends beyond just the portal itself.

Compliance Impact

This vulnerability allows unauthenticated attackers to compromise Oracle WebCenter Portal via SOAP, potentially leading to full system takeover. Such unauthorized access could result in unauthorized data exposure, modification, or deletion, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update for Oracle Fusion Middleware, specifically addressing Oracle WebCenter Portal. Restrict network access to SOAP services via firewalls. Monitor for unusual activity in Oracle WebCenter Portal logs.

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