CVE-2026-70856Network attack vector

Unauthenticated takeover requiring user interaction

Published Aug 18, 2026 · Updated Aug 20, 2026

Improper access control in Oracle Siebel CRM Deployment 17.0 through 26.6 allows remote attackers to take over the service via HTTP. Oracle's public advisory identifies the Migration component and NVD maps the issue to CWE-284, but no public record inspected discloses the specific request, code path, or trust check that mishandles untrusted input. Exploitation is remote and unauthenticated but requires human interaction, so exposure depends on whether a reachable migration workflow can be induced and exercised by another user.

CVSS severity7.5
High
EPSS probability0.33%
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 26.6 allows remote attackers to take over the service via HTTP. Oracle's public advisory identifies the Migration component and NVD maps the issue to CWE-284, but no public record inspected discloses the specific request, code path, or trust check that mishandles untrusted input. Exploitation is remote and unauthenticated but requires human interaction, so exposure depends on whether a reachable migration workflow can be induced and exercised by another user.

The record

CVE
CVE-2026-70856
Published
Aug 18, 2026
Updated
Aug 20, 2026
Vendor
Oracle
Product
Siebel CRM Deployment
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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 <=26.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Siebel CRM Deploymentversion=17.0 <=26.6

Published CVSS scores

7.5OracleCVSS:3.1/AV:N/AC:H/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

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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