CVE-2026-70689Network attack vector

Unauthenticated remote service takeover

Published Aug 18, 2026 · Updated Aug 25, 2026

Oracle Essbase 21.8.1.0.0 contains an Infrastructure flaw that allows remote attackers to take over the service via HTTP. Oracle has not published the affected endpoint, request structure, or operation that mishandles untrusted input. Exploitation requires no authentication or user interaction and grants access to alter or read all accessible data and interrupt the service.

CVSS severity9.8
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Oracle Essbase 21.8.1.0.0 contains an Infrastructure flaw that allows remote attackers to take over the service via HTTP. Oracle has not published the affected endpoint, request structure, or operation that mishandles untrusted input. Exploitation requires no authentication or user interaction and grants access to alter or read all accessible data and interrupt the service.

The record

CVE
CVE-2026-70689
Published
Aug 18, 2026
Updated
Aug 25, 2026
Vendor
Oracle
Product
Oracle Essbase
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=21.8.1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle Essbaseversion=21.8.1.0.0

Published CVSS scores

9.8OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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