Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Network HTTP access with a valid low-privilege session (PR:L, AV:N, AC:L); cross-boundary data exposure gives S:C and C:H, with no integrity or availability impact.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.5. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. While the vulnerability is in Siebel CRM Cloud Applications, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).
AnalysisAI
Unauthorized data access in Oracle Siebel CRM Cloud Applications (Siebel Cloud Manager component, versions 22.3 through 26.5) allows a low-privileged attacker with network HTTP access to read all data accessible to the application. Oracle rates it CVSS 3.1 7.7 with a scope change, and the ENISA EUVD flags an authentication-bypass characteristic, meaning a minimally-authenticated actor can escalate to broad confidentiality compromise that spills into additional connected products. No public exploit identified at time of analysis and it is not listed in CISA KEV.
Technical ContextAI
Siebel CRM is Oracle's enterprise customer relationship management suite; the affected piece is the Siebel Cloud Manager, the cloud provisioning and management layer that orchestrates Siebel deployments and brokers access between the CRM application tier and surrounding cloud services. The vulnerability sits in the HTTP-facing management surface of this component. Oracle assigned no CWE, but the 'Authentication Bypass' tag combined with the scope-change and confidentiality-only impact profile is consistent with a broken access-control or authorization weakness (broadly the CWE-284/CWE-285 class) in which a low-privilege session reaches data or functions belonging to other tenants or higher-privilege contexts. The scope change (S:C) in the CVSS vector indicates the vulnerable Cloud Manager can affect resources beyond its own security authority - namely other Siebel CRM Cloud Applications data.
RemediationAI
Apply the fixes delivered in the Oracle Critical Patch Update of July 2026 (https://www.oracle.com/security-alerts/cpujul2026.html); no specific fixed build number is stated in the available data, so consult the CPU patch matrix for the exact level corresponding to your 22.3-26.5 release - Patch available per vendor advisory. Because the affected surface is the network HTTP management interface, interim compensating controls are: restrict network reachability of the Siebel Cloud Manager endpoints to trusted management networks or VPN (trade-off: may disrupt legitimate remote administration); place the application behind a WAF or reverse proxy with tightened authentication and per-tenant authorization checks (trade-off: cannot fully substitute for the vendor fix against an authorization-logic flaw); and minimize low-privilege account grants while auditing access logs for cross-tenant or anomalous data reads (trade-off: detective, not preventive). Given the scope change, also validate that connected downstream Siebel Cloud Applications enforce their own access controls rather than trusting the Cloud Manager.
More in Siebel Crm
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-47045
GHSA-gmx5-4x4c-qwxp