Oracle Siebel CRM Cloud Applications up to 26.9 Siebel Cloud Manager improper authorization

Summaryinfo

A vulnerability was found in Oracle Siebel CRM Cloud Applications up to 26.9. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Siebel Cloud Manager. This manipulation causes improper authorization. The identification of this vulnerability is CVE-2026-91364. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Oracle Siebel CRM Cloud Applications up to 26.9 and classified as critical. Affected by this vulnerability is an unknown function of the component Siebel Cloud Manager. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Siebel CRM Cloud Applications executes to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Cloud Applications accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

It is possible to read the advisory at oracle.com. This vulnerability is known as CVE-2026-91364 since 09/15/2026. The exploitation appears to be easy. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/21/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Customer Relationship Management System

Vendor

• Oracle

Name

• Siebel CRM Cloud Applications

Version

• 26.0
• 26.1
• 26.2
• 26.3
• 26.4
• 26.5
• 26.6
• 26.7
• 26.8
• 26.9

License

• commercial

Website

• Vendor: https://www.oracle.com

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