CVE-2026-87398 — HIGH (7.5)

Vulnerability 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 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-400

References

https://www.oracle.com/security-alerts/cpuoct2026.html

FAQ

What is CVE-2026-87398?

CVE-2026-87398 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2026-87398?

CVE-2026-87398 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-87398?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.