# CVE-2023-21839: Oracle WebLogic Server Unspecified Vulnerability

> CVE-2023-21839: Oracle WebLogic Server Unspecified Vulnerability. CVSS 7.5 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-21839
Last updated: 2025-10-21T23:15:28Z

- Published: 2023-01-17 23:35 UTC · Updated: 2025-10-21 23:15 UTC · Assigner: oracle
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS: 99.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-05-01, federal due date 2023-05-22, ransomware use: Unknown

## 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).

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Oracle Corporation: WebLogic Server

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-21839)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-21839)
- [http://packetstormsecurity.com/files/172882/Oracle-Weblogic-PreAuth-Remote-Command-Execution.html](http://packetstormsecurity.com/files/172882/Oracle-Weblogic-PreAuth-Remote-Command-Execution.html)
- [https://www.oracle.com/security-alerts/cpujan2023.html](https://www.oracle.com/security-alerts/cpujan2023.html)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-21839 · Markdown: https://rewindex.com/cve/CVE-2023-21839.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-21839 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:43.927Z