CVE-2023-21839

HIGH7.5

CISA KEV

Published 2023-01-18 · Updated 2026-06-17 · Source secalert_us@oracle.com

Summary

CVE-2023-21839 is a high-severity (CVSS 7.5) vulnerability in Oracle WebLogic Server. CISA added it to the Known Exploited Vulnerabilities catalog on May 1, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 22, 2023. CISA does not currently list it as used in ransomware campaigns. Oracle has 46 vulnerabilities in the KEV catalog, 13 of them linked to ransomware.

All 46 known-exploited Oracle vulnerabilities →

Description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. 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 unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

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

CWE-502CWE-306

CISA Known-Exploited Vulnerability

Product: Oracle — WebLogic Server

Name: Oracle WebLogic Server Unspecified Vulnerability

Date added: 2023-05-01 · Due: 2023-05-22

Required action: Apply updates per vendor instructions.

References

View on NVD

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