CVE-2026-83180 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 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 • 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 critical risk to organizations relying on this enterprise customer relationship management platform for their core business operations. The nature of the defect allows an attacker with low privileges and network access via HTTP to compromise the integrity and availability of the deployment environment. Such vulnerabilities are particularly dangerous in enterprise settings because they can be leveraged by internal users or external actors who have gained a foothold within the corporate network perimeter, potentially serving as a pivot point for further lateral movement across the infrastructure.
From a technical perspective, the vulnerability enables an attacker to achieve complete takeover of the Siebel CRM Deployment service with minimal effort due to its low complexity and lack of user interaction requirements. The ability to exploit this flaw via HTTP indicates that the attack vector does not necessarily require encrypted channels or complex authentication bypasses beyond what is already granted by the initial low-privilege access. This characteristic significantly lowers the barrier for exploitation, allowing automated tools to rapidly identify and leverage the weakness against vulnerable instances. The high impact on confidentiality, integrity, and availability suggests that successful exploitation could lead to unauthorized data exfiltration, modification of critical business records, or denial of service conditions that disrupt organizational workflows.
The operational impact of this vulnerability is severe, as indicated by a CVSS 3.1 Base Score of 8.8, which classifies it as High severity. 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 originates from a network perspective with low complexity and requires only low privileges to execute. Once exploited, an attacker can manipulate system configurations, inject malicious code, or extract sensitive customer data stored within the CRM database. This compromises not just the technical availability of the application but also the trustworthiness of the business intelligence derived from it. Organizations must recognize that even low-privileged accounts pose a significant threat when such infrastructure-level flaws exist, as they can escalate privileges and gain administrative control over the deployment environment.
To mitigate this risk, immediate patching to the latest available version of Oracle Siebel CRM is essential. Administrators should verify their current build against Oracle’s security advisories to ensure all relevant patches are applied. In addition to software updates, implementing strict network segmentation can help limit exposure by restricting HTTP access to only authorized management interfaces and internal subnets that require it. Enforcing multi-factor authentication for all administrative accounts adds a layer of defense-in-depth, reducing the likelihood that compromised low-privilege credentials lead to full system takeover. Regular vulnerability scanning and penetration testing should be conducted to identify similar weaknesses in related components before they can be exploited by malicious actors.
This vulnerability aligns with common weakness enumerations such as CWE-269 Improper Privilege Management or CWE-78 OS Command Injection, depending on the specific underlying mechanism of the flaw within the Server Infrastructure component. It also maps to MITRE ATT&CK techniques related to Initial Access and Execution, particularly those involving web application attacks or exploitation of service vulnerabilities. Understanding these mappings helps security teams prioritize remediation efforts based on established industry standards for threat modeling and risk assessment. Continuous monitoring of Oracle’s official support channels is recommended to stay informed about any additional details regarding the root cause analysis and specific mitigation strategies provided by the vendor.