CVE-2026-62455Network attack vector

Data alteration and DoS via access control flaw

Published Aug 18, 2026 · Updated Aug 20, 2026

Improper access control in Oracle Siebel CRM Cloud Applications 22.3 through 26.6 allows remote authenticated users to alter data via HTTP. Oracle attributes the flaw to the Siebel Cloud Manager component but has not disclosed the failing endpoint, method, or authorization check that accepts the unauthorized request. Exploitation requires valid low-privileged network access and can yield unauthorized create, delete, modify, and partial read access to application data, plus hangs or repeatable crashes of the application.

CVSS severity8.3
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 Cloud Applications 22.3 through 26.6 allows remote authenticated users to alter data via HTTP. Oracle attributes the flaw to the Siebel Cloud Manager component but has not disclosed the failing endpoint, method, or authorization check that accepts the unauthorized request. Exploitation requires valid low-privileged network access and can yield unauthorized create, delete, modify, and partial read access to application data, plus hangs or repeatable crashes of the application.

The record

CVE
CVE-2026-62455
Published
Aug 18, 2026
Updated
Aug 20, 2026
Vendor
Oracle
Product
Siebel CRM Cloud Applications
Classifications
CWE-284
Attack vector
network
Privileges
authenticated

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=22.3 <=26.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle · Siebel CRM Cloud Applicationsversion=22.3 <=26.6

Published CVSS scores

8.3OracleCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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

CWE-284Improper Access Control

Public exploit references

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Technologies

Your stack

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Your stack

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