Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Remote HTTP reach and low complexity give AV:N/AC:L; a low-privilege account is required so PR:L not PR:N; scope change and full takeover justify S:C and C:H/I:H/A:H.
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 takeover of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
AnalysisAI
Full application takeover in Oracle Siebel CRM Cloud Applications (versions 22.3 through 26.5) allows a low-privileged, network-based attacker to compromise the product via HTTP through the Siebel Cloud Manager component. Because the flaw carries a scope change, successful exploitation can pivot beyond Siebel to significantly impact additional connected products, driving the rare CVSS 9.9 rating. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV, but the low attack complexity and low privilege bar make it a high-priority patch item.
Technical ContextAI
The affected component is Siebel Cloud Manager, the orchestration and provisioning layer used to deploy and manage Oracle's Siebel CRM Cloud Applications. Siebel is a large enterprise CRM suite with numerous integrated modules and back-end connections, which is why Oracle flags a scope change (S:C) - the manager component sits at a trust boundary and its compromise can cascade into other managed systems. Oracle did not assign a CWE (CWE: N/A) and the source tag reads 'Information Disclosure', but the CVSS impact set (C:H/I:H/A:H) plus the explicit 'takeover' language points to an authorization or privilege-boundary weakness rather than a mere read-only disclosure. Without a CWE or vendor technical write-up, the exact root-cause class (for example broken access control, injection, or an SSRF-style pivot) cannot be confirmed from the provided data.
RemediationAI
Apply the fixes delivered in the Oracle Critical Patch Update (CPU) of July 2026 - Patch available per vendor advisory at https://www.oracle.com/security-alerts/cpujul2026.html; Oracle CPUs bundle the patched builds, so upgrade every Siebel CRM Cloud Application instance in the affected 22.3-26.5 range to the CPU-remediated release (no standalone fix version number was published in the provided data, so consult the CPU patch matrix for the exact patch). Until patched, reduce exposure by restricting network access to the Siebel Cloud Manager HTTP interface so it is reachable only from trusted management networks or via VPN/bastion (trade-off: may disrupt legitimate remote administration and automation), tightening account provisioning to minimize the number of low-privileged accounts that can reach the component (since PR:L means any low-privileged user is a potential actor), and increasing WAF and endpoint logging on the Cloud Manager interface to detect anomalous requests. Because a scope change is involved, also review and segment the trust relationships between Siebel Cloud Manager and downstream managed products to limit lateral impact if the manager is compromised.
More in Siebel Cloud Manager
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Siebel Cloud Manager in Oracle Siebel CRM Cloud Applications (versions 22.3 through 26.5) exposes an authentication bypa
Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-47060
GHSA-2h7v-5p5c-38xm