CVE-2026-61321 in Siebel CRM Cloud Applications
Summary
by MITRE • 08/19/2026
Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.6. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Cloud Applications accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Siebel Cloud Manager component of Oracle Siebel CRM, specifically affecting supported versions ranging from 22.3 through 26.6. This security flaw represents a significant risk to organizations relying on this enterprise customer relationship management platform for critical business operations and data storage. The core issue stems from an architectural or implementation weakness within the cloud manager interface that fails to adequately enforce access controls when processing requests transmitted over HTTP. Because the vulnerability is easily exploitable, it lowers the barrier for entry significantly, allowing attackers who possess low-level privileges on the network to initiate successful exploitation attempts without requiring complex setup or high-privilege credentials initially.
From a technical perspective, the flaw allows an attacker with network access and basic authentication rights to manipulate critical data structures within the Siebel CRM environment. The absence of proper authorization checks enables unauthorized creation, deletion, or modification of sensitive records stored in the application database. This capability directly impacts both the confidentiality and integrity aspects of the security triad. An adversary can exfiltrate proprietary customer information, financial records, or strategic business plans by reading data they are not authorized to view. Simultaneously, the ability to modify or delete critical data undermines the reliability and trustworthiness of the entire system, potentially leading to operational disruptions or corrupted decision-making processes based on tampered information.
The operational impact of this vulnerability is severe, as indicated by a CVSS 3.1 Base Score of 8.1, which classifies it as High severity. The specific vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) highlights that the attack is network-based with low complexity and requires no user interaction, yet demands only low-privileged access to execute. This profile suggests that internal threats or compromised lower-level accounts can be leveraged by external attackers who have gained a foothold within the corporate network perimeter. The complete compromise of accessible data means that once an attacker exploits this flaw, they may achieve persistent unauthorized access to all Siebel CRM Cloud Applications accessible data, effectively bypassing standard security boundaries designed to protect sensitive enterprise information.
In terms of industry-standard classification frameworks, this vulnerability aligns with CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, as the core failure is the inability of the system to correctly restrict actions based on user roles. Furthermore, from an offensive security perspective such as MITRE ATT&CK, this behavior corresponds to techniques involving Credential Access or Data Exfiltration via Application Layer Protocols, specifically leveraging HTTP for unauthorized data retrieval and manipulation. The lack of required user interface interaction (UI:N) further emphasizes the automated nature of potential exploitation scripts that could be deployed in targeted attacks against Oracle Siebel deployments.
To mitigate this risk, organizations must prioritize immediate patching to update the Siebel Cloud Manager component to a version where these access control flaws have been resolved by Oracle. It is critical to verify the specific build numbers associated with security advisories released for versions 22.3 through 26.6 and apply the relevant hotfixes or service packs as soon as they become available. In addition to patching, implementing strict network segmentation can help limit lateral movement if an attacker gains initial low-privileged access. Enforcing multi-factor authentication for all administrative and privileged accounts reduces the likelihood of credential compromise leading to exploitation. Regular audits of user permissions should also be conducted to ensure that no unnecessary privileges are granted to standard users who do not require elevated rights, thereby reducing the attack surface available to potential adversaries exploiting this specific vulnerability.