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CISA Known Exploited Vulnerability
This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.
CVE

CVE-2023-21839

7.5
CVSShigh
Exploitable remotely over the internet · no authentication required.
Attack Vector
Network
Privileges Req.
None
User Interaction
None
weblogic server
Updated Nov 10, 2026View on NVD →
S4E scanner

Oracle WebLogic Server - Unauthorized Access

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). References: https://github.com/vulhub/vulhub/tree/master/weblogic/CVE-2023-21839 https://github.com/houqe/POC_CVE-2023-21839 https://web.archive.org/web/20230831012940/https://github.com/4ra1n/CVE-2023-21839 https://www.labs.greynoise.io/grimoire/2023-04-21-oracle-weblogic-blog/ https://www.oracle.com/security-alerts/cpujan2023.html https://nvd.nist.gov/vuln/detail/CVE-2023-21839

9 assets checked · domain, subdomain, ipv4

CVE history: weblogic server

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