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7.5

Oracle Essbase 21.8.3 can be crashed remotely

CVE-2026-91664 · published 15 days ago
Summary

The 21.8.3 version of Oracle Essbase can be attacked by anyone who can reach it over the network. An attacker can cause the service to stop responding or repeatedly crash, leading to a denial of service. Apply the latest security update from Oracle as soon as possible to stop this behavior.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
oracle corporation oracle essbase 21.8.3.0.0
Original advisory text
Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access v...
Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Essbase. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-400Uncontrolled Resource Consumption
Timeline
Published20 Oct 2026
Updated3 Nov 2026
First seen20 Oct 2026
Sources
CVE-2026-91664 · NVD
CVE-2026-91664 · MITRE
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