CVE-2026-73963

Analyzed Analyzed - Analysis Complete

Oracle WebCenter Portal Authentication Bypass Vulnerability

Publication date: 2026-09-15

Last updated on: 2026-09-21

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 HTTP to compromise Oracle WebCenter Portal. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-21

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-73963

EUVD

EUVD-2026-79317

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-287	When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This is a critical vulnerability in Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0 that allows an unauthenticated attacker to remotely compromise the system via HTTP. Successful exploitation could lead to full takeover of the Oracle WebCenter Portal.

Detection Guidance

Detection of CVE-2026-73963 requires checking for vulnerable versions of Oracle WebCenter Portal (12.2.1.4.0 or 14.1.2.0.0) and monitoring for unauthorized access attempts via HTTP. Oracle provides security patches and updates that should be applied immediately. Use Oracle's official tools or scripts to scan for affected versions and configurations.

Impact Analysis

An attacker could gain complete control over your Oracle WebCenter Portal, potentially accessing, modifying, or deleting sensitive data, disrupting services, or using the compromised system to launch further attacks.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties and reputational damage.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0. If patches are unavailable, consider disabling the vulnerable Portlet Services component or restricting network access to the HTTP interface.

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