CVE-2026-83153Network attack vector

Authenticated deployment takeover via undisclosed HTTPS flaw

Published Sep 15, 2026 · Updated Sep 15, 2026

Improper access control in Oracle Siebel CRM Deployment 17.0 through 26.7 allows remote authenticated users to take over the deployment. Oracle has not published the specific Server Infrastructure flaw or the HTTPS request-processing error that enables the takeover. Low-privileged Siebel credentials and HTTPS access are required; successful exploitation grants control of the deployment and affects its data and availability.

CVSS severity8.8
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Oracle Siebel CRM Deployment 17.0 through 26.7 allows remote authenticated users to take over the deployment. Oracle has not published the specific Server Infrastructure flaw or the HTTPS request-processing error that enables the takeover. Low-privileged Siebel credentials and HTTPS access are required; successful exploitation grants control of the deployment and affects its data and availability.

The record

CVE
CVE-2026-83153
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Oracle
Product
Siebel CRM Deployment
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=17.0 <=26.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle · Siebel CRM Deploymentversion=17.0 <=26.7

Published CVSS scores

8.8OracleCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
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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