Summary
CVE-2026-61318 is a critical vulnerability in the Siebel Cloud Manager component of Oracle Siebel CRM Cloud Applications. It allows an unauthenticated, remote attacker with network access via HTTP to compromise and fully take over affected Siebel CRM Cloud Applications instances. Oracle rates the issue Critical, with a CVSS v3.1 base score of 9.8.
Technical details
- Root cause: an easily exploitable flaw in the Siebel Cloud Manager component of Siebel CRM Cloud Applications, as documented by Oracle.
- Trigger conditions: no authentication or user interaction is required; the attack requires only network access to the application over HTTP.
- Attack vector: network (remote, over HTTP), with low attack complexity and no privileges required.
- Impact: successful exploitation can result in complete takeover of Siebel CRM Cloud Applications, with high impact to confidentiality, integrity, and availability.
Affected software
- Oracle Siebel CRM Cloud Applications, Siebel Cloud Manager component: supported versions 22.3 through 26.6 (inclusive).
Severity
- CVSS v3.1 Base Score: 9.8 (Critical)
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Mitigation and recommended actions
- Immediate: Apply the fix provided in Oracle’s August 2026 Critical Patch Update/Security Alert (cspuaug2026) for all Siebel CRM Cloud Applications deployments running versions 22.3 through 26.6.
- If immediate patching is not possible: restrict network access to Siebel CRM Cloud Applications management/HTTP interfaces to trusted networks only, and monitor for anomalous unauthenticated requests until the patch can be applied.
How IONIX identifies potentially affected assets
IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.
- Page title:
Oracle - Siebel Customer Relationship Management

