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-2026-91638
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 lets a low-privileged attacker with network access over HTTP compromise the product without user interaction. Successful attacks can take over Oracle Essbase and may significantly affect additional products. The supported affected version is 21.8.3.0.0.
What to do: Apply Oracle's update for CVE-2026-91638. Oracle has not listed a fixed version.
| 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 HTTP 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).