Security Flaw in Oracle Essbase Allows Network-Based Compromise
CVE-2026-91647

8.1HIGH

Key Information:

Vendor

Oracle
Status
Oracle Essbase
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91647?

A vulnerability exists in Oracle Essbase, specifically impacting the security component, which allows unauthenticated attackers with network access via TCP to potentially compromise the platform. This weakness can lead to unauthorized control over Oracle Essbase systems, raising significant security concerns. Oracle recommends users apply necessary patches to mitigate this risk.

Affected Version(s)

Oracle Essbase 21.8.3.0.0

References

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

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.