CVE-2026-83021: Oracle WebLogic Server

Critical severity, CVSS 10.0. EPSS: 0.5% chance of exploitation in the next 30 days.

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Web Container). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. While the vulnerability is in Oracle WebLogic Server, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Affected products

• Oracle WebLogic Server: version 12.2.1.4.0 only; version 14.1.1.0.0 only; version 14.1.2.0.0 only

Published 2026-09-15. Last modified 2026-09-28.