EUVD-2026-61643
GHSA-7fxm-g4fj-4h9j
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Consistent with Oracle's disclosed vector: low-privileged network attacker over HTTP, no user interaction, full CIA impact, no scope change to other systems.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in Oracle Essbase (component: Calculator). The supported version that is affected is 21.8.1.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in takeover of Oracle Essbase. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
AnalysisAI
Full system takeover in Oracle Essbase 21.8.1.0.0 is achievable by any low-privileged authenticated user with network access via HTTP, targeting the Calculator component. The CVSS 3.1 score of 8.8 reflects complete impact across confidentiality, integrity, and availability (C:H/I:H/A:H), consistent with Oracle's own classification of this as 'easily exploitable.' No public exploit code or CISA KEV listing has been identified at time of analysis, though the low attack complexity and network vector make this a credible and accessible exploitation path for any valid account holder.
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires possession of a valid low-privilege account on the Oracle Essbase instance - the CVSS PR:L metric confirms authentication is mandatory, ruling out unauthenticated pre-auth exploitation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 (High) rating is internally consistent with the disclosed vector: network-accessible, low complexity, low privilege threshold, no user interaction, and full C/H/I/A impact with no scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the patch provided in Oracle's August 2026 Critical Patch Update, referenced at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit all active Essbase user accounts and review authentication logs from the past 30 days for anomalies; identify and document all business processes dependent on Essbase. …
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External POC / Exploit Code
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