CVE-2026-70949 in Siebel CRM Deployment
Summary
by MITRE • 08/19/2026
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.6. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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 Server Infrastructure component of Oracle Siebel CRM Deployment versions ranging from 17.0 through 26.6, representing a critical security flaw that undermines the integrity and availability of enterprise customer relationship management systems. This specific weakness is characterized by its high exploitability due to low authentication requirements and network accessibility via standard HTTP protocols. The vulnerability allows an attacker with low privileges who has established network connectivity to the target system to execute unauthorized actions that lead to complete compromise of the Siebel CRM Deployment environment. Such a scenario poses severe risks to organizations relying on these systems for sensitive customer data management, as it effectively bypasses traditional perimeter defenses and internal access controls designed to restrict administrative functions to authorized personnel only.
From a technical perspective, this vulnerability aligns with common patterns found in web application frameworks where improper validation of input or insufficient separation of privileges allows unauthenticated or low-privileged users to interact with backend services intended for administrators. The ability to achieve full system takeover indicates that the flaw likely involves privilege escalation through insecure direct object references, broken access control mechanisms, or potentially remote code execution vectors embedded within the deployment infrastructure's API endpoints. When an attacker successfully exploits this weakness, they gain the same level of authority as a local administrator on the underlying operating system hosting the Siebel application server. This grants them unrestricted read and write access to configuration files, database credentials stored in plaintext or weakly encrypted formats, and potentially the ability to inject malicious scripts into web pages served by the deployment infrastructure, facilitating further lateral movement within the corporate network.
The operational impact of this vulnerability is profound given its CVSS 3.1 base score of 8.8, which reflects high severity across confidentiality, integrity, and availability dimensions. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) confirms that the attack is network-based with low complexity and requires no user interaction, while maintaining unchanged scope but delivering high impacts on all three security pillars. In practical terms, this means an attacker can exfiltrate sensitive customer information leading to regulatory violations under frameworks such as GDPR or CCPA, alter critical business logic causing financial loss or reputational damage, and disrupt service availability resulting in operational downtime for sales and support teams dependent on the CRM platform. The lack of user interface interaction requirement makes automated scanning tools particularly effective at detecting and exploiting this flaw across large enterprise deployments without manual intervention from target users.
Mitigation strategies must prioritize immediate remediation through vendor-provided patches or updates that address the underlying code defects responsible for the privilege escalation or access control failure. Organizations should implement strict network segmentation to isolate Siebel CRM deployment servers from untrusted networks, ensuring that only authorized management stations can communicate with these critical infrastructure components over secure channels such as HTTPS rather than HTTP. Additionally, deploying Web Application Firewalls configured with rulesets specific to Oracle Siebel vulnerabilities can help detect and block exploit attempts before they reach the application layer. It is also advisable to enforce multi-factor authentication for all administrative accounts associated with the deployment infrastructure and conduct regular vulnerability assessments using tools that simulate low-privileged network attacks to identify similar weaknesses in other connected systems. Continuous monitoring of access logs for anomalous privilege escalation patterns will aid in early detection if patching cannot be applied immediately, thereby reducing the window of exposure during remediation efforts aligned with industry standards like NIST SP 800-53 and MITRE ATT&CK techniques related to initial access and persistence via compromised credentials.