CVE-2026-62592 in Siebel CRM Integration
Summary
by MITRE • 08/19/2026
Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: Open Integration). Supported versions that are affected are 25.12-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration. Successful attacks of this vulnerability can result in takeover of Siebel CRM Integration. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Open Integration component of Oracle Siebel CRM, specifically affecting supported versions ranging from 25.12 through 26.6. This critical security flaw allows for a complete compromise of the integration layer due to insufficient authentication controls and input validation mechanisms. The nature of this defect classifies it under CWE-798: Use of Hard-coded Credentials or CWE-306: Missing Authentication for Critical Function, depending on the specific implementation details of how access is granted without proper verification. An attacker with network access via HTTP can exploit this weakness to gain unauthorized entry into the system. The absence of required authentication tokens or session validation enables unauthenticated actors to interact directly with sensitive integration endpoints that should be restricted to authorized users only.
The operational impact of exploiting this vulnerability is severe, resulting in a total takeover of the Siebel CRM Integration environment. This aligns with the highest severity ratings found in industry standards such as CVSS 3.1, where the base score reaches 9.8 out of 10. The vector string AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates that the attack is network-based, requires low complexity, demands no prior privileges or user interaction, and results in high impacts on confidentiality, integrity, and availability. Consequently, an attacker can read sensitive customer data stored within the CRM system, modify critical business records to alter operational outcomes, or disrupt services entirely by crashing integration processes. This level of access effectively neutralizes the security perimeter around the enterprise resource planning and customer relationship management infrastructure managed through Siebel.
From a threat modeling perspective using the MITRE ATT&CK framework, this vulnerability facilitates initial access techniques such as T1078: Valid Accounts if credentials are bypassed or reused improperly, but more accurately represents T1190: Exploit Public-Facing Application due to its exposure via HTTP and lack of authentication. The ability to take over the integration component allows for lateral movement within the network architecture, potentially leading to further exploitation of connected systems that rely on data exchanged through these integrations. Attackers may leverage this foothold to inject malicious scripts or manipulate API responses, thereby compromising the integrity of downstream applications and databases synchronized with Siebel CRM.
Mitigation strategies must prioritize immediate remediation by applying vendor-provided security patches for all affected versions between 25.12 and 26.6. Organizations should verify that their deployment configurations enforce strict authentication protocols on all integration endpoints, ensuring that no public-facing interfaces operate without robust access controls. Implementing Web Application Firewalls with rules specifically targeting unauthenticated requests to known vulnerable paths can provide a temporary layer of defense while patches are deployed. Additionally, network segmentation should be reviewed to ensure that the Siebel CRM Integration components are isolated from direct internet exposure wherever possible, limiting attack surfaces and reducing the risk of exploitation by external adversaries seeking to compromise critical business data.