---
id: CVE-2026-87394
title: >-
  Vulnerability in the Oracle Outside In Technology product of Oracle Fusion
  Middleware (component: Outside In Core)
summary: >-
  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 …
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle Outside In Technology
affected:
  - oracle_outside_in_technology 8.5.8
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:24:28.775Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-87394'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.842Z'
---

## Overview

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 of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).

## Affected

- `oracle_outside_in_technology 8.5.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.