CVE-2026-70855

Critical

Description

Vulnerability in the Siebel Apps - Self Service product of Oracle Siebel CRM (component: Helpdesk/Training). Supported versions that are affected are 17.0-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel Apps - Self Service. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel Apps - Self Service, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel Apps - Self Service accessible data as well as unauthorized access to critical data or complete access to all Siebel Apps - Self Service accessible data. CVSS 3.1 Base Score 9.3 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N).

SeverityCritical
CVSS9.3
Exploit probability—
ProductSiebel Apps - Self Service
PublishedAug 18, 2026
First seenAug 18, 2026

How to fix

Affected products

ProductAffected versionsFixed in
Oracle Corporation Siebel Apps - Self Service17.0 ≤ v ≤ 26.6—

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