Unauthorized Data Access in Oracle Middleware Common Libraries

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Oracle

Description

Vulnerability in the Oracle Middleware Common Libraries and Tools product of Oracle Fusion Middleware (component: Remote Diagnostic Agent). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Middleware Common Libraries and Tools executes to compromise Oracle Middleware Common Libraries and Tools. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Middleware Common Libraries and Tools accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-20

Generated

2026-10-21

AI Q&A

2026-10-21

EPSS Evaluated

N/A

NVD

CVE-2026-91617

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle	Corporation	Oracle Middleware Common Libraries and Tools 12.2.1.4.0
Oracle	Corporation	Oracle Middleware Common Libraries and Tools 14.1.1.0.0
Oracle	Corporation	Oracle Middleware Common Libraries and Tools 14.1.2.0.0
Oracle	Corporation	Oracle Middleware Common Libraries and Tools 15.1.1.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Middleware Common Libraries and Tools, specifically in the Remote Diagnostic Agent component. It affects versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. The issue allows a low-privileged attacker with local access to compromise the system, potentially leading to unauthorized access to critical data.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive data stored or processed by Oracle Middleware Common Libraries and Tools. Since the attacker needs local access, the risk is higher in environments where unauthorized physical or remote logins are possible.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for the affected versions of Oracle Middleware Common Libraries and Tools. Ensure the Remote Diagnostic Agent component is updated to a patched version. Restrict logon privileges to the infrastructure where this component executes to limit unauthorized access.

Hi! I’m here to help you understand CVE-2026-91617. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70