CVE-2026-101404 in Siebel Apps
Summary
by MITRE • 10/21/2026
Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing). Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Siebel Apps - Marketing executes to compromise Siebel Apps - Marketing. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel Apps - Marketing accessible data as well as unauthorized read access to a subset of Siebel Apps - Marketing accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Siebel Apps - Marketing. CVSS 3.1 Base Score 3.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Marketing component of Oracle Siebel CRM, specifically affecting supported versions ranging from 17.0 through 26.9. This security flaw is characterized by a high barrier to exploitation, requiring an attacker to possess high-level privileges and valid authentication credentials on the underlying infrastructure where the application executes. The nature of this vulnerability aligns with CWE-250, which describes vulnerabilities that allow attackers to execute code or perform actions without proper restrictions when they already have significant access rights. Because the attack vector is local and requires a privileged account, it represents an insider threat scenario or a consequence of privilege escalation from a lower-level compromise where the attacker has gained administrative control over the server environment.
The technical flaw enables unauthorized modifications to data accessible by Siebel Apps Marketing, including updates, inserts, and deletions. This directly impacts the integrity of business-critical marketing data stored within the CRM system. Additionally, the vulnerability permits unauthorized read access to a subset of this data, compromising confidentiality for sensitive customer or campaign information. The impact extends beyond data manipulation to include availability concerns, as successful exploitation can lead to a partial denial of service condition. This means that while the system may remain partially operational, its performance and responsiveness are degraded, potentially disrupting marketing operations and user productivity. These impacts correspond to the CVSS 3.1 base score of 3.9, reflecting low severity across confidentiality, integrity, and availability metrics due to the high privilege requirement for exploitation.
From an offensive security perspective, this vulnerability maps to ATT&CK techniques involving local privilege escalation or unauthorized access to data stores by authenticated users with elevated permissions. The ability to cause a partial denial of service suggests potential resource exhaustion mechanisms within the application logic when processing malicious inputs from privileged accounts. This could involve inefficient handling of specific requests that consume excessive CPU or memory resources, leading to system instability for other users sharing the same infrastructure.
Mitigation strategies must focus on strict access control and monitoring rather than simple patching if no vendor update is immediately available. Administrators should enforce the principle of least privilege by ensuring that high-level administrative accounts are not used for routine marketing operations. Multi-factor authentication should be implemented to protect these privileged credentials from theft or misuse. Furthermore, continuous monitoring of system resources and application logs can help detect anomalies indicative of exploitation attempts, such as unusual spikes in resource usage or unauthorized data access patterns. Regular audits of user permissions within the Siebel environment are essential to minimize the attack surface available to potential insiders or attackers who have compromised lower-level accounts.