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CVE-2026-91635 is a vulnerability in the Security component of Oracle Essbase affecting supported version 21.8.3.0.0. An unauthenticated attacker with network access through T3 or IIOP can exploit the vulnerability to take over Oracle Essbase. Exploitation has high attack complexity and requires no user interaction. The underlying weakness and vulnerable function are not identified. The CVSS v3.1 base score is 8.1, with vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
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A vulnerability in the Security component of Oracle Essbase 21.8.3.0.0 allows an unauthenticated network attacker using T3 or IIOP to take over Oracle Essbase. Exploitation has high attack complexity and requires no user interaction. The CVSS 3.1 base score is 8.1, with high confidentiality, integrity, and availability impacts.
A vulnerability in the Security component of Oracle Essbase 21.8.3.0.0 allows an unauthenticated network attacker to take over the application through T3 or IIOP. Exploitation has high attack complexity but requires no user interaction. The CVSS 3.1 score is 8.1, with high confidentiality, integrity, and availability impacts. The record was received on October 20, 2026, and references Oracle's October 2026 security advisory, but the supplied content does not explicitly confirm patch availability or exploitation.
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