EUVD-2026-61572
GHSA-q647-3jj5-p4fp
Severity by source
AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Network-reachable HTTP endpoint, no authentication required, but AC:H reflects Oracle-stated difficulty; scope change and dual High impacts for confidentiality and integrity are supported by the authentication bypass description; no availability impact described.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: Open Integration). Supported versions that are affected are 25.12-26.6. Difficult to exploit vulnerability allows unauthenticated 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 unauthorized creation, deletion or modification access to critical data or all Siebel CRM Integration accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Integration accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).
AnalysisAI
Authentication bypass in Oracle Siebel CRM Integration (Open Integration component, versions 25.12-26.6) allows a remote unauthenticated attacker reachable over HTTP to gain unauthorized read and write access to critical CRM data, with a confirmed scope change meaning successful exploitation can cascade to impact additional integrated systems beyond Siebel itself. The AC:H rating indicates exploitation is difficult and likely requires meeting specific environmental or timing conditions, tempering the urgency implied by the 8.7 CVSS score. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have network access to the Siebel CRM Integration system over HTTP, targeting the Open Integration component specifically. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 8.7 is driven primarily by the scope change and dual High impacts (Confidentiality and Integrity), but the AC:H metric is a material risk moderator - Oracle's own description calls this 'difficult to exploit,' implying preconditions such as specific timing, race conditions, or non-default environmental states must be satisfied. … 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 | Apply the Oracle Critical Patch Update for August 2026, referenced at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses this vulnerability. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of Oracle Siebel Open Integration instances across all environments (production, staging, development) to identify systems running versions 25.12-26.6 and document business criticality of each instance. …
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
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