EUVD-2026-61433
GHSA-fjxm-gvr2-8wcm
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Network-reachable authentication bypass over HTTP requires no privileges; high complexity reflects specific state conditions needed; no availability impact is stated in the description.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.6. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Deployment accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
AnalysisAI
Oracle Siebel CRM Deployment's Server Infrastructure component exposes versions 17.0 through 26.6 to an unauthenticated, network-based authentication bypass over HTTP that can result in complete compromise of CRM data confidentiality and integrity. The high complexity rating (AC:H) tempers immediate mass-exploitation risk, but the Authentication Bypass tag combined with C:H and I:H impact means a successful attacker achieves full read and write access to all CRM-accessible data - including customer records, sales pipelines, and service data - without presenting valid credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires unauthenticated network access to the Oracle Siebel CRM Server Infrastructure component over HTTP - meaning the Server Infrastructure HTTP listener must be reachable from the attacker's network. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.4 reflects a material, high-severity vulnerability with important real-world nuance: AV:N confirms that the Siebel Server Infrastructure must be reachable over HTTP from an attacker-controlled network, while AC:H signals that exploitation is not straightforward and likely requires precise timing, a specific server state, protocol-level condition, or race window that must be carefully engineered. … 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 Security Patch Update for August 2026, available via the vendor advisory at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running Oracle Siebel CRM versions 17.0 through 26.6 in production and non-production environments. …
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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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