CVE-2026-62590 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. 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).
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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 is classified as a high-severity issue with a CVSS 3.1 base score of 8.5, indicating significant potential for system compromise. The vulnerability allows an attacker to achieve complete takeover of the Siebel CRM Integration service. Although exploitation requires network access via HTTP and involves some complexity in terms of attack execution difficulty, the low privilege requirement for the attacker lowers the barrier to entry significantly. This combination of factors makes it a critical threat that demands immediate attention from security operations teams responsible for maintaining these enterprise resource planning environments.
From a technical perspective, this vulnerability is categorized under CWE-269, which addresses Improper Privilege Management, and potentially aligns with CWE-78, the OS Command Injection weakness, depending on the specific mechanism of code execution within the integration layer. The attack vector is network-based (AV:N), meaning remote exploitation over a standard HTTP connection is possible without user interaction (UI:N). While the access complexity is listed as high (AC:H), suggesting that certain conditions or sequences are required to successfully trigger the flaw, the requirement for only low privileged authentication (PR:L) means that any authenticated user with basic access rights can potentially leverage this issue. The scope of the vulnerability changes from C to S:C in the CVSS vector, which signifies a critical impact on other components beyond the vulnerable component itself. This implies that compromising Siebel CRM Integration does not remain isolated but cascades into broader system compromise, affecting additional products within the Oracle ecosystem due to shared resources or trust relationships.
The operational impact of this vulnerability is severe across all three pillars of the CIA triad: confidentiality, integrity, and availability are all rated as high (H). An attacker who successfully exploits this flaw can gain full control over the Siebel CRM Integration service. This level of access allows for unauthorized disclosure of sensitive customer data stored within the CRM system, violating strict regulatory compliance requirements such as GDPR or HIPAA if applicable. Furthermore, the integrity impact enables attackers to modify critical business records, leading to potential financial fraud or operational disruption. The availability impact suggests that an attacker could also render the integration service unusable through denial-of-service techniques facilitated by the same code execution path, thereby disrupting business continuity for organizations relying on real-time data synchronization between Siebel and other enterprise applications.
In terms of threat modeling, this vulnerability maps to MITRE ATT&CK technique T1059, Command and Scripting Interpreter, specifically if it involves executing system commands through the integration interface. It also relates to T1136, Create Account, as an attacker might create new administrative accounts to maintain persistent access after initial compromise. The lateral movement potential is heightened due to the scope change characteristic noted in the CVSS vector. Once inside the Siebel CRM Integration layer, attackers can pivot to other connected systems that trust this integration point for authentication or data exchange. This creates a chain of vulnerability where a single entry point leads to widespread network infiltration, making it essential to treat this not just as an application-layer issue but as a critical infrastructure risk.
Mitigation strategies must prioritize immediate patching by Oracle for the affected versions 25.12 through 26.6. Until patches are applied or deployed in production environments, organizations should implement strict network segmentation policies to restrict HTTP access to the Siebel CRM Integration components from untrusted networks. Access control lists (ACLs) on firewalls and web application firewalls should be configured to limit connectivity to only authorized IP addresses known for legitimate integration traffic. Additionally, enforcing multi-factor authentication for all accounts with any level of privilege in the Siebel environment can reduce the risk posed by low-privileged attackers who might otherwise exploit this flaw. Continuous monitoring of system logs for anomalous command execution patterns or unusual data exfiltration activities is also recommended to detect potential exploitation attempts early. Regular vulnerability scanning and penetration testing focused on integration endpoints will help identify similar weaknesses in related systems before they can be leveraged by malicious actors.