CVE-2026-101460 in Siebel CRM Deployment
Summary
by MITRE • 10/21/2026
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Server Infrastructure component of Oracle Siebel CRM Deployment, specifically affecting supported versions ranging from 17.0 through 26.9. This security flaw is characterized by its ease of exploitation and does not require any form of authentication or user interaction to be triggered. An attacker with network access can leverage this weakness via the TLS protocol to compromise the integrity and confidentiality of the Siebel CRM Deployment environment. The presence of such a vulnerability in enterprise-grade customer relationship management systems poses significant risks, as these platforms typically house sensitive corporate data including client information, sales pipelines, and operational metrics.
From a technical perspective, the flaw allows an unauthenticated remote attacker to gain unauthorized access to critical data stored within the system. This indicates a failure in proper authentication or authorization checks during the TLS handshake or subsequent request processing phases. The vulnerability is classified under CWE-287, which denotes Improper Authentication, as well as potentially CWE-359 for Exposure of Private Information to an Unauthorized Actor. The ability to access all Siebel CRM Deployment accessible data suggests that once this initial foothold is established, the attacker may be able to traverse further into the application logic or underlying database structures without being detected by standard security controls designed to prevent unauthenticated access.
The operational impact of this vulnerability is severe, primarily driven by high-impact confidentiality consequences as reflected in its CVSS 3.1 Base Score of 7.5. The vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) confirms that the attack surface is network-based, requires low complexity for exploitation, and demands no prior privileges or user interface interaction. While immediate integrity and availability impacts are not explicitly detailed in the base score, unauthorized access to critical data can lead to downstream effects such as data manipulation, regulatory non-compliance due to breaches of privacy laws like GDPR or CCPA, and reputational damage. Attackers could potentially exfiltrate sensitive customer records, internal communications, or proprietary business strategies, leading to competitive disadvantage or legal liabilities for the affected organization.
In terms of threat modeling, this vulnerability aligns with MITRE ATT&CK techniques related to Initial Access via Network Service Exploitation. Specifically, it resembles patterns seen in T1190 (Exploit Public-Facing Application) where attackers target vulnerabilities in internet-facing services to gain initial entry into a network. The lack of authentication requirements makes this particularly dangerous for organizations that may have inadvertently exposed Siebel CRM endpoints to the public internet or insufficiently segmented internal networks, allowing lateral movement opportunities once inside the perimeter.
To mitigate this risk, immediate action is required to apply the latest security patches provided by Oracle for all affected versions within the 17.0-26.9 range. Organizations should verify their deployment configurations and ensure that no unpatched instances are exposed to external networks or internal segments with broad trust relationships. Implementing strict network segmentation can help isolate Siebel CRM servers from less trusted zones, reducing the attack surface even if a vulnerability exists. Additionally, deploying Web Application Firewalls (WAFs) configured to detect anomalous TLS traffic patterns associated with exploitation attempts can provide an additional layer of defense. Regular security audits and penetration testing focused on authentication mechanisms are recommended to identify similar weaknesses in other components of the CRM infrastructure before they can be exploited by malicious actors.