CVE-2026-101764 in Communications Billing and Revenue Management
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Communications Billing and Revenue Management product of Oracle Communications (component: BRM Server). Supported versions that are affected are 15.0.0.0.0, 15.0.1.0.0, 15.1.0.0.0 and 15.2.0.0.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Communications Billing and Revenue Management executes to compromise Oracle Communications Billing and Revenue Management. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Communications Billing and Revenue Management accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The Oracle Communications Billing and Revenue Management product, specifically within the BRM Server component, contains a security vulnerability affecting versions 15.0.0.0.0 through 15.2.0.0. This flaw represents a significant risk to organizations relying on this platform for critical billing operations, as it allows an attacker with low privileges and valid logon credentials to compromise the integrity of the system. The vulnerability is classified under CVSS version 3.1 with a base score of 5.5, indicating a medium severity level driven primarily by high confidentiality impacts while maintaining no direct impact on availability or integrity according to the vector string AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. This scoring reflects that an attacker does not require user interaction and can exploit the flaw locally with minimal privilege, yet the primary consequence is data exposure rather than system disruption.
From a technical perspective, this vulnerability aligns closely with CWE-200, which encompasses information exposure vulnerabilities where sensitive data becomes accessible to unauthorized parties. The operational impact centers on the potential for an authenticated attacker to access critical billing records, customer financial details, and other proprietary business intelligence stored within the BRM database or application layer. Because the attack vector is local (AV:L), it implies that the threat actor must already have a foothold on the infrastructure hosting Oracle Communications Billing and Revenue Management. This could occur through compromised user accounts, insider threats, or lateral movement from another breached system where low-level access was previously established. The lack of requirement for user interaction (UI:N) means the exploitation is automated and does not depend on social engineering tactics such as clicking malicious links or opening infected files.
The ATT&CK framework categorizes this type of vulnerability under techniques related to Credential Access and Data Exfiltration, specifically mapping to T1078 Valid Accounts if the attacker leverages legitimate credentials obtained through other means, or potentially T1530 Data from Cloud Storage if the exposed data resides in associated cloud repositories. The ability to achieve complete access to all accessible data suggests a failure in proper role-based access control (RBAC) enforcement or insufficient separation of duties within the application logic. This allows low-privileged users to traverse beyond their intended permissions, effectively escalating their capabilities regarding data visibility without gaining administrative rights over system configuration or execution privileges.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Oracle should apply the latest security patches released for the affected BRM Server versions to address the underlying code flaw that permits unauthorized data retrieval. In addition to patching, organizations should enforce strict least-privilege principles by auditing user roles and ensuring that low-level accounts do not possess excessive read permissions on sensitive tables or API endpoints. Network segmentation is also critical; even if an attacker gains local access, isolating the BRM server from general corporate networks limits lateral movement opportunities. Furthermore, implementing robust logging and monitoring solutions can help detect anomalous data retrieval patterns indicative of exploitation attempts, allowing security teams to respond before significant data loss occurs. Regular vulnerability assessments and penetration testing should be conducted to identify similar privilege escalation paths across the entire communication infrastructure.