CVE-2026-87398

Analyzed Analyzed - Analysis Complete

Oracle Outside In Technology Denial of Service 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 of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. 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).

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-87398

EUVD

EUVD-2026-106439

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	outside_in_technology	8.5.8

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 Outside In Technology version 8.5.8. It allows an unauthenticated attacker to remotely crash the software by sending specially crafted HTTP requests, causing it to hang or repeatedly crash without requiring any user interaction.

Detection Guidance

This vulnerability affects Oracle Outside In Technology version 8.5.8. Detection involves checking for the presence of this specific version on your system. Use commands like 'rpm -qa | grep Outside' on Linux or 'Get-WmiObject -Query "SELECT * FROM Win32_Product" | Where-Object {$_.Name -like "*Outside In*"}' on Windows to identify installations.

Impact Analysis

If you use Oracle Outside In Technology 8.5.8, an attacker could exploit this flaw to disrupt service availability, leading to downtime for applications relying on this component. This could affect business operations, data processing, or user access to systems using the vulnerable software.

Compliance Impact

This vulnerability causes denial-of-service (DOS) conditions in Oracle Outside In Technology, leading to system unavailability. Such disruptions may impact compliance with regulations like GDPR (data processing delays) or HIPAA (service interruptions for healthcare data). However, specific compliance impacts depend on system usage and mitigations applied.

Mitigation Strategies

Apply the latest security patches from Oracle for Outside In Technology version 8.5.8 or upgrade to a non-vulnerable version. Disable HTTP access to the affected component if possible until patched. Monitor Oracle's security advisories for updates.

Hi! I’m here to help you understand CVE-2026-87398. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...