UpHeron
All vulnerabilities

Servers and applications

CVE-2023-21839

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…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 1 May 2023.

Severity
High 7.5
Published
18 Jan 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Oracle WebLogic ServerServers and applications · cpe:a:oracle:weblogic_server
  • Version 12.2.1.3.0
  • Version 12.2.1.4.0
  • Version 14.1.1.0.0

Known exploited

CISA name
Oracle WebLogic Server Unspecified Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
22 May 2023
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-21839
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-21839