Remote Code Execution Vulnerability in Oracle WebLogic Server by Oracle
CVE-2026-91323

9.8CRITICAL

Key Information:

Vendor

Oracle
Status
Oracle Weblogic Server
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91323?

A vulnerability in Oracle WebLogic Server enables unauthenticated attackers to gain network access and potentially take over the server. This flaw stems from improper configurations in the affected versions of Oracle WebLogic Server, specifically versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. Should an attacker exploit this vulnerability, they could compromise the confidentiality, integrity, and availability of the server, posing significant risks to any organization using these systems.

Affected Version(s)

Oracle WebLogic Server 12.2.1.4.0

Oracle WebLogic Server 14.1.1.0.0

Oracle WebLogic Server 14.1.2.0.0

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.