CVE-2026-62596 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 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 unauthorized access to critical data or complete access to all Siebel CRM Integration accessible data as well as unauthorized update, insert or delete access to some of Siebel CRM Integration accessible data. CVSS 3.1 Base Score 8.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).
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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 security flaw represents a critical weakness in the application layer where external systems interact with the core customer relationship management platform via HTTP protocols. The nature of this defect allows for an easily exploitable attack vector that does not require user interaction or complex preconditions, thereby lowering the barrier to entry significantly for malicious actors seeking to compromise enterprise data integrity and confidentiality.
From a technical perspective, the vulnerability stems from insufficient validation or access control mechanisms within the integration endpoints exposed by Siebel CRM Integration. This architectural oversight permits low-privileged attackers who possess network connectivity via HTTP to manipulate requests in ways that bypass intended security boundaries. The absence of robust authentication checks or input sanitization at this specific interface layer enables unauthorized entities to execute commands or query data structures without proper authorization, effectively turning a standard integration point into an entry vector for deeper system compromise.
The operational impact of exploiting this vulnerability is severe due to the critical nature of customer relationship management systems which often house sensitive personal identifiable information, financial records, and strategic business intelligence. Successful exploitation leads directly to unauthorized access to critical data, resulting in high-impact confidentiality breaches where attackers can exfiltrate proprietary or regulated information. Furthermore, the integrity impact is substantial as attackers gain the ability to perform unauthorized updates, inserts, or deletions against accessible Siebel CRM Integration data. This capability allows for potential manipulation of customer records, transaction histories, or communication logs, which can lead to significant financial loss, regulatory non-compliance, and reputational damage for the affected organization.
A particularly concerning aspect of this vulnerability is its scope change characteristic. Although the technical flaw is localized within the Siebel CRM Integration component, the successful exploitation allows attackers to pivot into additional products connected through these integration points. This lateral movement capability means that compromising a single low-privileged endpoint can lead to a broader compromise of the entire enterprise IT ecosystem dependent on Siebel for data synchronization and workflow automation. The CVSS 3.1 base score of 8.5 reflects this high severity, driven primarily by the High impact on Confidentiality and Low impact on Integrity, alongside the Network-based attack vector and Low complexity required to exploit it.
To mitigate these risks, organizations must immediately apply the latest security patches provided by Oracle for Siebel CRM versions within the affected range. In addition to patching, implementing strict network segmentation is essential to restrict HTTP access to integration endpoints only from trusted IP addresses or internal subnets that require such connectivity. Deploying Web Application Firewalls with rules specifically tuned to detect anomalous patterns in integration traffic can provide an additional layer of defense by blocking malicious payloads before they reach the vulnerable component. Furthermore, enforcing multi-factor authentication and ensuring all service accounts used for integrations adhere to the principle of least privilege will reduce the blast radius should a breach occur. Regular auditing of access logs related to Siebel Integration endpoints is also recommended to detect any signs of unauthorized probing or exploitation attempts early in the attack lifecycle.