CVE-2026-83077 in Siebel CRM Cloud Applications
Summary
by MITRE • 09/16/2026
Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.7. 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 unauthorized update, insert or delete access to some of Siebel CRM Cloud Applications accessible data as well as unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 6.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N).
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Siebel Cloud Manager component of Oracle Siebel CRM, specifically affecting supported versions ranging from 22.3 through 26.7. This security flaw represents a significant risk to organizations relying on this enterprise customer relationship management platform for their core business operations. The root cause is tied to insufficient access control mechanisms or improper validation within the cloud manager interface, which allows an attacker with low privileges and network connectivity via HTTP to interact with system functions in ways that were not intended by the application designers. Because Siebel CRM often serves as a central repository for sensitive customer data, sales pipelines, and operational metrics, any compromise of its integrity can have cascading effects on other integrated systems, leading to a scope change where additional products within the enterprise infrastructure are impacted beyond just the immediate target component.
From a technical perspective, this vulnerability is classified under CWE-269 Improper Privilege Management or potentially CWE-862 Missing Authorization, depending on whether the issue stems from an elevation of privilege or a failure to enforce access controls for existing privileges. The attack vector is network-based and requires no user interaction, making it particularly dangerous as automated exploitation tools can be deployed against exposed endpoints. An attacker with low privileged credentials, such as a standard end-user account, can leverage this flaw to perform unauthorized operations on the underlying data store. Specifically, the vulnerability enables both read and write access violations. The ability to execute unauthorized updates, inserts, or deletions constitutes an integrity violation that aligns with CWE-798 Use of Hard-coded Credentials if authentication bypass is involved, but more accurately maps to CWE-200 Information Exposure when considering the data leakage aspect, although the primary impact here is on data manipulation.
The operational impact of this vulnerability is severe due to its dual nature affecting both confidentiality and integrity. Successful exploitation allows an attacker to gain unauthorized read access to a subset of accessible data within Siebel CRM Cloud Applications. This means sensitive customer information, contact details, or proprietary business strategies could be exfiltrated without detection. More critically, the ability to perform unauthorized updates, inserts, or deletes poses a direct threat to data integrity. An adversary could alter sales records, delete critical client interactions, or inject malicious entries into the database. In an enterprise environment where Siebel CRM integrates with ERP systems, marketing automation platforms, and support ticketing tools, such data corruption can lead to significant financial loss, regulatory non-compliance, and reputational damage. The CVSS 3.1 base score of 6.4 reflects this moderate-to-high severity, driven by the low attack complexity and lack of required user interaction, despite the requirement for a low-privileged account which limits the blast radius slightly compared to an admin-level compromise.
In terms of threat modeling, this vulnerability aligns with MITRE ATT&CK technique T1078 Valid Accounts, as it exploits legitimate but insufficiently restricted credentials, and potentially T1530 Data from Cloud Storage if the data exfiltration is extensive. The lack of user interface interaction required for exploitation places it in a high-risk category for automated scanning and exploitation campaigns targeting exposed web applications. Organizations must recognize that even low-privileged accounts can serve as entry points for significant lateral movement or data destruction when such flaws exist within critical infrastructure components like cloud managers.
To mitigate this risk, immediate action is required to apply the latest security patches provided by Oracle for Siebel CRM versions 22.3 through 26.7. Administrators should verify that all instances of Siebel Cloud Manager are updated to a version where this vulnerability has been remediated. In addition to patching, organizations should review their access control policies to ensure that the principle of least privilege is strictly enforced across all user roles within the CRM environment. Network segmentation strategies should be employed to restrict HTTP access to the Siebel Cloud Manager interface only from trusted internal networks or via secure VPN connections, rather than exposing it directly to the public internet if possible. Furthermore, implementing Web Application Firewalls with rules specifically designed to detect and block anomalous data manipulation patterns can provide an additional layer of defense against exploitation attempts while patches are being deployed. Continuous monitoring for unusual database activity related to insert, update, or delete operations on sensitive tables is also recommended to detect potential breaches early.