CVE-2026-101446 in Siebel CRM Cloud Applications
Summary
by MITRE • 10/21/2026
Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. While the vulnerability is in Siebel CRM Cloud Applications, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Siebel Cloud Manager component of Oracle Siebel CRM Cloud Applications, affecting supported versions ranging from 17.0 through 26.9. This security flaw represents a critical risk to enterprise environments relying on this customer relationship management platform for mission-critical operations. The core issue stems from an easily exploitable weakness that permits low-privileged attackers with network access via HTTP to compromise the application infrastructure. Unlike many vulnerabilities that require complex exploitation chains or specific user interactions, this defect allows for straightforward remote execution by adversaries who possess minimal authentication privileges and basic connectivity to the target system.
The technical nature of this flaw is characterized by its ease of exploitation and broad impact scope. An attacker does not need high-level administrative credentials or social engineering tactics such as phishing to initiate an attack; instead, mere network access combined with low-privileged user status is sufficient to trigger the vulnerability. This significantly lowers the barrier to entry for malicious actors, including automated botnets or script-kiddies who may lack sophisticated technical skills but have access to vulnerable endpoints on a corporate network. The use of HTTP as the vector indicates that if TLS encryption is not properly enforced or configured across all communication channels within the Siebel environment, attackers can intercept and manipulate traffic to exploit this flaw without detection by standard security monitoring tools designed for encrypted connections.
A critical aspect of this vulnerability is its potential for scope change, meaning that while the initial point of compromise is within Siebel CRM Cloud Applications, the successful exploitation can lead to a lateral movement across additional products in the organization's ecosystem. This implies that the application likely shares underlying infrastructure, database schemas, or authentication mechanisms with other enterprise systems. Consequently, gaining control over Siebel does not remain isolated; it serves as a foothold for attackers to pivot into adjacent services, potentially exposing sensitive data stored in integrated databases or compromising connected business intelligence tools. This interconnectedness amplifies the risk profile from a single application failure to a potential organizational-wide breach.
The operational impact of this vulnerability is severe, quantified by a CVSS 3.1 Base Score of 9.9 out of 10. This score reflects high impacts on confidentiality, integrity, and availability due to the complete takeover capability granted to attackers. With full control over Siebel CRM Cloud Applications, an adversary can exfiltrate sensitive customer data, including personally identifiable information (PII), financial records, and proprietary business strategies, leading to significant regulatory penalties under frameworks such as GDPR or CCPA. Furthermore, the integrity of the system is compromised as attackers can alter sales forecasts, manipulate client interactions, or inject malicious code into reports. The availability impact suggests that attackers could also disrupt service by crashing processes or deploying ransomware, halting critical business operations and causing substantial financial loss through downtime and recovery efforts.
From a classification perspective, this vulnerability aligns with CWE-798: Use of Hard-coded Credentials if the low privilege access is derived from default configurations, or more likely CWE-269: Improper Privilege Management if it involves escalating privileges after initial low-level access. In terms of offensive security frameworks, this maps to MITRE ATT&CK techniques such as T1078: Valid Accounts for initial access and potentially T1053: Scheduled Task/Job or T1486: Data Encrypted for Impact depending on the specific exploitation method used post-compromise. The ability to take over an application with low privileges often involves exploiting improper input validation or authentication bypass mechanisms, which may also relate to CWE-287: Improper Authentication if the flaw allows unauthorized state changes without proper verification of user rights beyond basic login status.
Mitigation strategies must prioritize immediate remediation and architectural hardening. Oracle should be consulted for the latest security patches that address this specific vulnerability in Siebel Cloud Manager, ensuring all instances within the 17.0 to 26.9 version range are updated promptly. Organizations must enforce strict network segmentation to limit HTTP access from untrusted zones, ideally restricting management interfaces and application endpoints to internal networks or secure virtual private networks (VPNs). Implementing Web Application Firewalls with rules tailored to detect exploitation patterns associated with this flaw can provide an additional layer of defense. Additionally, enforcing multi-factor authentication for all user accounts, even low-privileged ones, reduces the risk of credential-based attacks that might precede the exploitation of this vulnerability. Regular audits of access controls and privilege assignments are essential to ensure that no unnecessary permissions exist within the Siebel environment, thereby minimizing the attack surface available to potential adversaries seeking lateral movement opportunities.