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CVE-2026-91663 is a critical vulnerability in the Security component of Oracle Essbase affecting supported version 21.8.3.0.0. A low-privileged attacker with network access over T3 or IIOP can exploit the vulnerability with low attack complexity and without user interaction to take over Oracle Essbase. Exploitation may also significantly affect additional products across security boundaries. The vulnerability has a CVSS v3.1 base score of 9.9 and vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. The underlying weakness and vulnerable function are not specified.
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No public exploit code observed for this vulnerability.
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A critical vulnerability in the Security component of Oracle Essbase 21.8.3.0.0 allows a low-privileged attacker with network access over T3 or IIOP to take over Oracle Essbase without user interaction. Attacks may significantly impact additional, unspecified products. The CVSS 3.1 score is 9.9, with high confidentiality, integrity, and availability impacts and changed scope.
A critical vulnerability in the Security component of Oracle Essbase 21.8.3.0.0 allows a low-privileged attacker with network access through T3 or IIOP to take over Essbase without user interaction. Attacks may significantly affect additional products beyond Essbase. The reported CVSS 3.1 score is 9.9, with high confidentiality, integrity, and availability impacts; vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
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Cross-references every affected SKU, including bundled OEM variants.
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