CVE-2026-83399

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

21 Oct 2026, 11:17

Type	Values Removed	Values Added
CWE		CWE-287 CWE-306

20 Oct 2026, 22:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 22:19

Updated : 2026-10-21 18:44

NVD link : CVE-2026-83399

Mitre link : CVE-2026-83399

CVE.ORG link : CVE-2026-83399

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

CWE-306

Missing Authentication for Critical Function

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