Security Vulnerability in Oracle Essbase by Oracle
CVE-2026-91635

8.1HIGH

Key Information:

Vendor

Oracle
Status
Oracle Essbase
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91635?

A security vulnerability in Oracle Essbase affects version 21.8.3.0.0, allowing an unauthenticated attacker with network access via T3 or IIOP protocols to potentially compromise the system. If exploited, this vulnerability can lead to unauthorized control over Oracle Essbase, impacting both data confidentiality and integrity. Organizations using this software should be vigilant and apply any necessary security patches provided by Oracle 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

.