Security Vulnerability in Oracle Essbase Affecting Network Access
CVE-2026-91634

5.3MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Essbase
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91634?

A security flaw exists in Oracle Essbase that can be exploited by an unauthenticated attacker with network access via T3 and IIOP protocols. This vulnerability potentially allows unauthorized read access to certain data within Oracle Essbase, exposing sensitive information and risking data integrity. Users should ensure they are following best practices in accessing their systems to mitigate this risk. For detailed information, refer to Oracle's advisory.

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:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.