CVE-2026-83155

Data disclosure and repeatable service crashes

Published Sep 15, 2026 · Updated Sep 15, 2026

Unspecified flaw in Server Infrastructure in Oracle Siebel CRM Deployment 17.0 through 26.7 allows remote authenticated users to read critical data. Oracle has not published the nature of the flaw or the TCP operation that Server Infrastructure performs incorrectly. Exploitation requires low privileges and access to the physical communication segment, and successful attacks disclose all accessible deployment data and cause a hang or repeatable crash.

CVSS severity7.3
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unspecified flaw in Server Infrastructure in Oracle Siebel CRM Deployment 17.0 through 26.7 allows remote authenticated users to read critical data. Oracle has not published the nature of the flaw or the TCP operation that Server Infrastructure performs incorrectly. Exploitation requires low privileges and access to the physical communication segment, and successful attacks disclose all accessible deployment data and cause a hang or repeatable crash.

The record

CVE
CVE-2026-83155
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Oracle
Product
Siebel CRM Deployment
Classifications
T1210, T1499.004
Attack vector
adjacent
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 vectoradjacent
Required privilegesauthenticated

What is affected?

Oracle · Siebel CRM Deploymentversion=17.0 <=26.7

Published CVSS scores

7.3OracleCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1210Exploitation of Remote Services
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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