Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Network-accessible REST API requires low-privilege auth (PR:L); difficult exploitation conditions (AC:H); full C/I/A impact with scope change aligns with described system takeover.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: REST). Supported versions that are affected are 17.0-26.6. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Integration. While the vulnerability is in Siebel CRM Integration, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Siebel CRM Integration. CVSS 3.1 Base Score 8.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H).
AnalysisAI
Full takeover of Oracle Siebel CRM Integration (versions 17.0-26.6) is achievable by a low-privileged authenticated attacker over HTTP, exploiting a flaw in the REST component. The CVSS scope change (S:C) means successful exploitation can pivot beyond the directly targeted service, potentially compromising additional Oracle or backend systems. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privileged Siebel CRM account with network access to the REST API over HTTP (PR:L per CVSS vector - unauthenticated exploitation is not indicated). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 8.5 reflects high impact across confidentiality, integrity, and availability with scope change, but the AC:H rating is a meaningful real-world risk moderator. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Oracle has released patches via the August 2026 Critical Security Patch Update, available at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of Siebel CRM Integration deployments running versions 17.0-26.6 and immediately restrict HTTP REST API access to explicitly trusted source IPs using firewall rules; audit and disable any low-privileged service accounts not required for active integrations. …
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-61810
GHSA-8mmw-j5gh-hf7r