CVE-2026-60753 in Siebel CRM Deployment
Summary
by MITRE • 08/19/2026
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Installation). Supported versions that are affected are 17.0-26.6. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Siebel CRM Deployment executes to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/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 installation component of Oracle Siebel CRM Deployment, specifically affecting versions ranging from 17.0 through 26.6. This security flaw represents a critical weakness in the deployment infrastructure that governs how the Siebel Customer Relationship Management system is initialized and configured on target systems. The nature of this defect allows for unauthorized access control bypass during the setup phase, which is typically one of the most sensitive operations within an enterprise software lifecycle. By exploiting this issue, an attacker can manipulate core configuration files or execution paths that are intended to be protected by administrative privileges, thereby undermining the integrity of the entire deployment architecture.
From a technical perspective, the vulnerability stems from insufficient validation and access control checks during the installation process. Although the requirement for local logon might suggest a higher barrier to entry, the low privilege level required indicates that even standard user accounts on the infrastructure hosting Siebel CRM can leverage this flaw. The attacker does not need complex social engineering or remote network exploitation vectors; instead, they simply need physical or logical access to the server environment where the deployment agent resides. Once logged in with basic credentials, the flawed installation routine fails to enforce proper separation of duties, allowing the user to execute commands or modify system states that should be restricted to high-privilege administrators. This effectively grants the attacker a foothold deep within the application layer without triggering typical privilege escalation alerts.
The operational impact of this vulnerability is severe, characterized by a complete compromise of the Siebel CRM Deployment service. As indicated by the CVSS 3.1 base score of 7.8, the attack results in high impacts across confidentiality, integrity, and availability. A successful exploitation leads to full takeover of the deployment component, which can serve as a pivot point for further attacks against the broader Siebel ecosystem. Attackers could inject malicious code into future deployments, exfiltrate sensitive customer data stored within the CRM configuration databases, or disrupt business operations by rendering the system unavailable. Given that installation components often run with elevated permissions to write to protected directories and modify registry keys, compromising this component effectively compromises the host operating system's security posture relative to the application layer.
This vulnerability aligns closely with CWE-269, which describes Improper Privilege Management, as it involves a user gaining privileges or capabilities beyond what is intended by the system design. Furthermore, in terms of offensive cyber operations and threat modeling, this scenario maps directly to MITRE ATT&CK technique T1078, Valid Accounts. The attacker utilizes legitimate credentials obtained through lower-level access to maintain persistence and expand their influence within the network environment. Because the exploitation requires local logon, it also touches upon physical or endpoint security failures where an adversary gains initial access to a workstation or server that is part of the deployment infrastructure.
Mitigation strategies must focus on both immediate remediation and long-term architectural hardening. The primary defense is applying the latest security patches provided by Oracle for Siebel CRM versions 17.0 through 26.6, which address the validation gaps in the installation routine. Organizations should also enforce strict least-privilege principles across their infrastructure, ensuring that accounts with access to deployment servers are monitored and restricted from performing administrative tasks unless absolutely necessary. Additionally, implementing robust endpoint detection and response solutions can help identify anomalous behavior during installation processes, such as unexpected modifications to system directories or registry keys by non-administrative users. Regular audits of user permissions on critical infrastructure components will further reduce the attack surface available for this type of local privilege abuse.