CVE-2026-87397

Analyzed Analyzed - Analysis Complete

Oracle Outside In Technology Memory Corruption Vulnerability

Publication date: 2026-10-20

Last updated on: 2026-11-04

Assigner: Oracle

Description

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Core). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Outside In Technology. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-11-04

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-87397

EUVD

EUVD-2026-106438

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	outside_in_technology	8.5.8

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 Outside In Technology version 8.5.8 within Oracle Fusion Middleware. It allows an unauthenticated attacker to remotely compromise the system via HTTP. Exploitation requires user interaction and can lead to full system takeover. The vulnerability has a high CVSS score of 8.8 due to its impact on confidentiality, integrity, and availability.

Detection Guidance

Detection of CVE-2026-87397 requires checking for vulnerable versions of Oracle Outside In Technology, specifically version 8.5.8. Inspect installed software and configurations for this component. Monitor network traffic for unusual HTTP requests targeting Oracle Fusion Middleware services.

Impact Analysis

An attacker could exploit this to gain control of the affected system, potentially accessing, modifying, or deleting sensitive data. Since it requires user interaction, victims may unknowingly trigger the attack by visiting a malicious link or file.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health information privacy). Organizations using the affected Oracle product may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Apply the latest security patches from Oracle for Outside In Technology version 8.5.8. Disable HTTP access to the affected component if possible. Monitor network traffic for unusual activity related to Oracle Outside In Technology.

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EPSS Chart

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