CVE-2026-91627
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Authentication Bypass in Oracle Communications Billing and Revenue Management

Publication date: 2026-10-20

Last updated on: 2026-10-26

Assigner: Oracle

Description
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. 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 takeover of Oracle Communications Billing and Revenue Management. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

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Meta Information

Published
2026-10-20
Last Modified
2026-10-26
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-91627
EUVD
EUVD-2026-106814

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

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Executive Summary

This is a vulnerability in Oracle Communications Billing and Revenue Management affecting versions 15.0.0.0.0, 15.0.1.0.0, 15.1.0.0.0, and 15.2.0.0.0. It allows a low-privileged attacker with logon access to compromise the system and potentially take it over. The vulnerability has a CVSS score of 7.8, indicating high impact on confidentiality, integrity, and availability.

Detection Guidance

Detection requires checking for Oracle Communications Billing and Revenue Management versions 15.0.0.0.0, 15.0.1.0.0, 15.1.0.0.0, or 15.2.0.0.0. Use Oracle's official tools or scripts to verify installed versions and patch levels. Check application logs for unusual activity or unauthorized access attempts.

Impact Analysis

If exploited, this vulnerability could allow an attacker to take over the Oracle Communications Billing and Revenue Management system. This could lead to unauthorized access, data breaches, service disruption, or complete system compromise, potentially affecting billing operations and sensitive data.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Such incidents could result in legal penalties, fines, or reputational damage due to compromised sensitive data.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for Oracle Communications Billing and Revenue Management to address this vulnerability. Ensure all affected versions (15.0.0.0.0, 15.0.1.0.0, 15.1.0.0.0, 15.2.0.0.0) are updated. Restrict user privileges to minimize attack surface and monitor system logs for suspicious activity.

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