CVE-2026-91629 in Communications Billing and Revenue Management
Summary
by MITRE • 10/22/2026
Vulnerability in the Oracle Communications Billing and Revenue Management product of Oracle Communications (component: Platform). 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. Difficult to exploit 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 4.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 10/22/2026
The identified vulnerability resides within the Oracle Communications Billing and Revenue Management platform, specifically affecting versions 15.0.0.0.0 through 15.2.0.0. This security flaw is classified as a low-privilege access issue that requires an attacker to have valid logon credentials on the underlying infrastructure where the application executes. The complexity of exploitation is rated as high, indicating that successful attacks require specific conditions or sophisticated techniques beyond simple automated scripts. Despite these barriers, the potential impact of a successful compromise is significant, primarily centered around data confidentiality rather than system integrity or availability.
From a technical perspective, this vulnerability aligns with CWE-200, which covers Exposure of Sensitive Information to an Unauthorized Actor. The core issue likely stems from insufficient access controls or improper validation mechanisms within the application logic that allows authenticated users with low privileges to traverse beyond their intended permissions boundaries. This could involve insecure direct object references or broken access control patterns where the system fails to properly verify if a user has the right to request specific billing data, customer records, or financial transactions stored in the backend databases. The high complexity of exploitation suggests that the flaw may require precise timing, specific input formatting, or knowledge of internal application states to trigger successfully.
The operational impact is predominantly focused on confidentiality breaches with a CVSS 3.1 base score of 4.7. An attacker who exploits this vulnerability can gain unauthorized access to critical data within the Billing and Revenue Management system. This includes sensitive customer information, billing histories, payment details, and potentially proprietary business logic or pricing structures. While integrity and availability are not directly impacted according to the vector string I:N/A:N, the exposure of such high-value financial data constitutes a severe privacy violation and regulatory compliance risk under frameworks like GDPR or PCI-DSS depending on the jurisdiction and data types involved.
In terms of threat modeling, this vulnerability maps to ATT&CK technique T1078, Valid Accounts, as it relies on legitimate credentials obtained through other means such as phishing or credential stuffing. It also relates to T1530, Data from Cloud Storage, if the sensitive data is accessed via cloud interfaces, though more broadly it fits under unauthorized access patterns typical of web application vulnerabilities. The attack vector AV:L indicates a local network requirement, meaning the attacker must be on the same internal network segment or have achieved initial foothold within the infrastructure perimeter to exploit this flaw remotely against the service.
Mitigation strategies should prioritize immediate patching by Oracle for all affected versions listed in their security advisories. In environments where patching is not immediately feasible, strict network segmentation and micro-segmentation policies can limit lateral movement from compromised low-privilege accounts to the specific servers hosting the Billing and Revenue Management platform. Implementing robust Web Application Firewall rules that detect anomalous data access patterns or excessive queries for sensitive objects may also provide a layer of defense. Additionally, enforcing multi-factor authentication and monitoring for unusual login behaviors can reduce the risk of credential theft leading to this exploitation path. Regular audits of user permissions ensure that low-privilege accounts do not accumulate unnecessary rights over time, thereby reducing the attack surface available to potential insiders or external attackers who have gained initial access.