CVE-2026-87369

Analyzed Analyzed - Analysis Complete

Denial of Service in Oracle Service Bus

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 unauthenticated attacker with network access via HTTP to compromise Oracle Service Bus. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Service Bus. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

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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-2026-87369

EUVD

EUVD-2026-106409

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-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a denial-of-service (DoS) vulnerability in Oracle Service Bus versions 12.2.1.4.0 and 14.1.2.0.0. An unauthenticated attacker can exploit it remotely via HTTP to crash the service, causing repeated downtime without needing credentials.

Detection Guidance

Detecting this vulnerability requires checking for Oracle Service Bus versions 12.2.1.4.0 or 14.1.2.0.0. Use commands like 'curl -v http://target:port/' to check service availability or 'nmap -p 80,443 target' to scan for open ports. Verify installed Oracle Service Bus versions via 'opatch lsinventory' or application logs.

Impact Analysis

If you use affected Oracle Service Bus versions, an attacker could disrupt your service availability, leading to outages and loss of functionality for applications relying on it.

Compliance Impact

This vulnerability causes denial-of-service (DOS) conditions in Oracle Service Bus, disrupting availability. While not directly tied to data breaches, prolonged downtime could impact systems handling regulated data, potentially violating availability requirements in GDPR or HIPAA. However, the CVE does not provide specific compliance implications.

Mitigation Strategies

Apply Oracle's official patch or update to a non-vulnerable version immediately. Restrict network access to Oracle Service Bus via firewalls or network segmentation. Monitor for unusual traffic patterns or service hangs as potential attack indicators.

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