CVE-2026-62591 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 require human interaction from a person other than the attacker. 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 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 is classified as an easily exploitable issue that permits unauthenticated attackers to compromise the integrity and confidentiality of the system via network access over HTTP. The high severity rating reflects a significant risk profile where the attack vector requires no prior authentication, allowing any remote actor with network connectivity to initiate exploitation attempts against the target infrastructure.
From a technical perspective, this vulnerability is characterized by its reliance on human interaction for successful exploitation, which places it within the category of social engineering or phishing-based attacks rather than purely automated script-driven exploits. The requirement for user interaction suggests that the flaw likely involves deceptive interfaces, malicious links, or crafted inputs designed to trick legitimate users into performing actions that bypass intended security controls. This aligns with common patterns found in cross-site scripting or request forgery scenarios where a victim's session or credentials are leveraged without their explicit knowledge of the compromise mechanism.
The operational impact of this vulnerability is severe, encompassing both confidentiality and integrity breaches while leaving availability intact according to the provided CVSS metrics. Successful exploitation enables unauthorized creation, deletion, or modification of critical data within Siebel CRM Integration. Furthermore, it grants attackers access to sensitive information that would otherwise remain protected by authentication mechanisms. This dual impact on data integrity and confidentiality means that an attacker can not only steal proprietary business intelligence but also alter records in ways that could disrupt business operations, corrupt financial reports, or manipulate customer relationship management data with lasting consequences.
In terms of industry standard classifications, this vulnerability maps closely to CWE-79 for Improper Neutralization of Input During Web Page Generation and potentially CWE-352 if it involves Cross-Site Request Forgery mechanisms requiring user interaction. The ATT&CK framework would categorize the initial access phase under T1078 Valid Accounts or T1189 Drive-by Compromise, depending on whether the attack vector exploits existing credentials through deception or forces actions via malicious web content. The high confidentiality and integrity impacts correspond to CWE-200 Information Exposure and CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization if race conditions are involved in data modification.
Mitigation strategies must focus on both technical controls and user awareness training. Immediate remediation should involve applying the latest security patches provided by Oracle for versions 25.12 through 26.6 to address the underlying code flaws within the Open Integration component. Network-level defenses such as Web Application Firewalls can be configured to detect and block anomalous HTTP requests that exhibit patterns associated with exploitation attempts, particularly those involving unusual parameter manipulation or unexpected data structures. Additionally, implementing strict Content Security Policy headers can help mitigate script injection vectors if they are part of the attack chain.
Organizations should also enforce multi-factor authentication for all administrative and sensitive user accounts to reduce the value of stolen credentials resulting from successful social engineering attacks. Regular security awareness training is essential to educate employees on recognizing phishing attempts or suspicious links that might trigger this vulnerability. By combining technical patching with robust defensive configurations and human-centric security practices, enterprises can significantly lower their exposure to this high-severity risk while maintaining the integrity and confidentiality of their critical CRM data assets.