Oracle October 2026 CPU issues 1,295 patches, including CVSS 9.8 flaws
Six hundred ninety patches are remotely exploitable without authentication, spanning database, middleware, Java and applications.
72
CVE-2026-91663
Improper access control in Oracle Essbase 21.8.3.0.0
- CVSS 3.1
- 9.9 critical
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
An improper access control flaw in the Security component of Oracle Essbase 21.8.3.0.0 lets a low-privileged attacker with network access over T3 or IIOP compromise the product. Exploitation is described as easy and needs no user interaction. A successful attack can take over Essbase and may significantly affect other products. Only that supported version is listed as affected.
What to do: Oracle has not listed a fixed version. Apply Oracle's update for CVE-2026-91663 when it is available.
| Product | Affected |
|---|---|
| Oracle Essbase | 21.8.3.0.0 |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via T3, IIOP to compromise Oracle Essbase. While the vulnerability is in Oracle Essbase, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Essbase. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).