CVE-2026-87364

Analyzed Analyzed - Analysis Complete

Oracle Service Bus Remote Code Execution

Publication date: 2026-10-20

Last updated on: 2026-11-05

Assigner: Oracle

Description

Vulnerability in the Oracle Service Bus product of Oracle Fusion Middleware (component: Core). 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 Service Bus. Successful attacks of this vulnerability can result in takeover of Oracle Service Bus. 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

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-11-05

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-87364

EUVD

EUVD-2026-106405

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	service_bus	12.2.1.4.0
oracle	service_bus	14.1.2.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Service Bus, a middleware product. It allows a low-privileged attacker with network access to take over the system. The vulnerability affects versions 12.2.1.4.0 and 14.1.2.0.0.

Detection Guidance

Detection of CVE-2026-87364 requires checking for vulnerable versions of Oracle Service Bus (12.2.1.4.0 or 14.1.2.0.0). Inspect Oracle Service Bus installations and logs for unauthorized access attempts via HTTP. Monitor network traffic for suspicious activity targeting Oracle Service Bus components.

Impact Analysis

An attacker could exploit this to gain full control of Oracle Service Bus, leading to potential data breaches, unauthorized access, or disruption of services. The high CVSS score indicates significant risk.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate GDPR (data protection) or HIPAA (health data privacy) requirements. Compliance could be compromised if exploited.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle Service Bus versions 12.2.1.4.0 and 14.1.2.0.0. Restrict network access to HTTP ports used by Oracle Service Bus. Implement strong authentication and authorization controls for low-privileged users.

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EPSS Chart

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