CVE-2026-83039

Analyzed Analyzed - Analysis Complete

Oracle WebCenter Portal Remote Code Execution

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: Composer). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Portal. 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 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVSS 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-2026-83039

EUVD

EUVD-2026-79367

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, specifically in the Composer component. It affects versions 12.2.1.4.0 and 14.1.2.0.0. The issue allows a low-privileged attacker with network access to compromise the system via HTTP. Successful exploitation can lead to a full takeover of Oracle WebCenter Portal.

Detection Guidance

Detection requires checking for Oracle WebCenter Portal versions 12.2.1.4.0 or 14.1.2.0.0. Verify installed versions via Oracle Fusion Middleware documentation or server logs. Monitor network traffic for unusual HTTP requests targeting the Composer component. Check for unauthorized administrative access or unexpected system changes.

Impact Analysis

An attacker could gain control of Oracle WebCenter Portal, potentially leading to unauthorized access, data theft, or disruption of services. Since attacks may impact additional products, the scope of compromise could extend beyond the portal itself.

Compliance Impact

This vulnerability allows low-privileged attackers to compromise Oracle WebCenter Portal, potentially leading to unauthorized access and control. Such breaches could result in exposure of sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations depending on the data processed.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0. Check Oracle's security advisories for patches and follow their instructions to update the affected component.

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