CVE-2026-101791 in Communications BRM Elastic Charging Engine
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Communications BRM - Elastic Charging Engine product of Oracle Communications (component: Security). The supported version that is affected is 15.2.0.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via TLS to compromise Oracle Communications BRM - Elastic Charging Engine. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Communications BRM - Elastic Charging Engine accessible data as well as unauthorized access to critical data or complete access to all Oracle Communications BRM - Elastic Charging Engine 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).
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Oracle Communications BRM Elastic Charging Engine, specifically affecting version 15.2.0.0.0 and potentially other supported releases of this critical telecommunications billing infrastructure component. This security flaw is categorized under the broader Security component of the product suite, indicating a weakness in how the system handles authentication or authorization mechanisms when processing incoming requests over Transport Layer Security connections. The vulnerability presents a significant risk to organizations relying on Oracle Communications for real-time charging and rating services, as it allows an attacker with low privileges and network access via TLS to compromise the integrity and confidentiality of the system's data stores.
From a technical perspective, the flaw enables unauthorized creation, deletion, or modification of critical data within the Elastic Charging Engine. This suggests that the vulnerability likely stems from insufficient validation of user permissions or improper enforcement of access control policies when handling specific API calls or internal service requests transmitted over encrypted channels. Although the connection is secured via TLS, which typically protects against eavesdropping and man-in-the-middle attacks during transit, the application layer fails to properly verify whether the authenticated low-privileged user has sufficient rights to perform administrative-level actions such as modifying billing records or deleting transaction logs. This misalignment between network-layer security and application-layer authorization creates a pathway for privilege escalation within the context of the specific service components involved.
The operational impact of this vulnerability is severe, characterized by high impacts on both confidentiality and integrity according to the CVSS 3.1 scoring model, which yields a base score of 8.1. Successful exploitation allows an attacker with low privileges to gain complete access to all Oracle Communications BRM Elastic Charging Engine accessible data. In the context of telecommunications billing systems, this means that sensitive customer information, including usage records, account balances, and personal identifiers, can be exfiltrated or altered without detection. Furthermore, the ability to create, delete, or modify critical data undermines the reliability of real-time charging processes. Attackers could manipulate call detail records, inflate charges for specific users, erase evidence of fraudulent activity, or disrupt service availability by corrupting essential configuration files or database entries. This level of access effectively bypasses standard security controls designed to isolate low-privileged operational accounts from sensitive administrative functions.
This vulnerability aligns with Common Weakness Enumeration (CWE) categories such as CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, reflecting the core issue where the system fails to enforce appropriate access control policies for authenticated users. In terms of offensive security frameworks like MITRE ATT&CK, this behavior corresponds to techniques involving Account Manipulation or Data Staged via Cloud Services if the attacker uses the compromised data exfiltration capabilities to move stolen information out of the environment. The attack vector is classified as Network with Low Complexity and requires no user interaction, making it particularly dangerous for systems exposed to internal networks or specific external interfaces that are not strictly segmented from lower-trust zones.
Mitigation strategies must focus on immediate patching and rigorous access control reviews. Oracle has likely released a security update addressing this flaw in subsequent versions of the Elastic Charging Engine; therefore, applying the latest available patches is the primary remediation step. Organizations should also implement strict network segmentation to ensure that low-privileged service accounts cannot communicate directly with sensitive backend components unless absolutely necessary. Additionally, deploying Web Application Firewalls or API gateways with advanced behavioral analysis can help detect anomalous patterns of data modification originating from low-privilege sources. Regular audits of user permissions and the principle of least privilege should be enforced to ensure that no single account possesses excessive rights across multiple functional domains within the billing infrastructure. Monitoring tools should be configured to alert on unusual spikes in write operations or unauthorized access attempts to critical database tables, providing an additional layer of defense against exploitation even if preventive controls are bypassed.