CVE-2026-83190 in Siebel CRM Deployment
Summary
by MITRE • 09/16/2026
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Siebel CRM Deployment executes to compromise Siebel CRM Deployment. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Server Infrastructure component of Oracle Siebel CRM Deployment, specifically affecting supported versions ranging from 17.0 through 26.7. This security flaw represents a significant risk to organizations relying on this enterprise customer relationship management platform for critical business operations. The nature of the defect allows an attacker with low privileges and valid logon credentials to compromise the integrity and availability of the Siebel CRM Deployment infrastructure. Unlike many remote code execution vulnerabilities that can be exploited over a network without user engagement, this specific flaw requires human interaction from a person other than the initial attacker. This social engineering aspect suggests that the vulnerability likely involves a mechanism where an authenticated but low-privileged user triggers a state change or resource allocation issue that is then acted upon by another user with higher privileges or system-level access, leading to a complete takeover of the deployment environment.
From a technical perspective, this vulnerability aligns closely with CWE-269 Improper Privilege Management and potentially CWE-847 Improper Enforcement of Behavioral Workflow if the human interaction involves bypassing intended operational procedures. The requirement for low privileged access indicates that the attacker does not need administrative rights to initiate the exploit chain, which is characteristic of many privilege escalation or logic flaws in enterprise applications. However, the necessity for a second party's involvement implies a complex attack vector where the initial compromise serves as a setup phase. This could involve manipulating session states, injecting malicious payloads into shared resources that are subsequently processed by higher-privileged processes, or exploiting race conditions in deployment scripts that require manual confirmation steps. The presence of this requirement significantly narrows the pool of potential attackers but does not eliminate the threat, particularly in environments where social engineering is a viable attack surface.
The operational impact of successfully exploiting this vulnerability is severe, as indicated by the CVSS 3.1 Base Score of 7.3 and its High severity rating across confidentiality, integrity, and availability metrics. A successful exploitation results in the complete takeover of Siebel CRM Deployment, granting the attacker unrestricted access to sensitive customer data, business processes, and system configurations. This level of compromise allows for extensive data exfiltration, modification or deletion of critical records, and disruption of service availability. In an enterprise context, such a breach can lead to significant financial loss, regulatory penalties under frameworks like GDPR or HIPAA if personal health information is involved, and irreversible damage to organizational reputation. The high impact on confidentiality underscores the risk of exposing proprietary business strategies and customer identities, while the integrity and availability impacts highlight the potential for operational paralysis and data corruption that could halt daily business activities.
Mitigation strategies must address both the technical flaw and the social engineering aspect of the attack vector. Organizations should immediately apply the latest security patches provided by Oracle to update their Siebel CRM Deployment instances to a version where this vulnerability is resolved. Access control policies should be reviewed to ensure that low-privileged users have minimal permissions, adhering strictly to the principle of least privilege. This includes restricting access to deployment scripts and administrative interfaces wherever possible. Furthermore, user awareness training is critical given the requirement for human interaction in the attack chain. Employees should be educated on recognizing suspicious requests or anomalies within the Siebel environment that might indicate an attempt to exploit this flaw. Implementing multi-factor authentication for all accounts with elevated privileges can add a layer of defense against unauthorized actions taken by compromised low-privileged users. Continuous monitoring and logging of deployment activities will also aid in detecting anomalous behavior indicative of exploitation attempts, allowing for rapid incident response before full system takeover occurs.