Oracle Communications Billing and Revenue Management: Improper privilege management
Summary
Oracle Communications Billing and Revenue Management versions 15.0.0.0.0, 15.0.1.0.0, 15.1.0.0.0 and 15.2.0.0.0 contain a flaw in the Platform component that is classified as improper privilege management (CWE-269). An attacker with low-privileged logon to the infrastructure where BRM runs can compromise the application and take it over, with high impact on confidentiality, integrity and availability. The attack is local, requires no user interaction and is not internet-facing by design. Oracle rates it with CVSS 3.1 base score 7.8.
Affected
- Oracle Communications Billing and Revenue Management 15.0.0.0.0
- Oracle Communications Billing and Revenue Management 15.0.1.0.0
- Oracle Communications Billing and Revenue Management 15.1.0.0.0
- Oracle Communications Billing and Revenue Management 15.2.0.0.0
Fixed in
Unknown. Check Oracle's October 2026 Critical Patch Update advisory for the patched release numbers and apply the fix.
Workaround
No vendor workaround known.
- Limit logon access to the BRM host to required personnel.
- Review local accounts on the host.
Exploitation
- CISA SSVC: exploitation none, not automatable.
- Not listed in CISA KEV.
- EPSS below 1%.
- No public proof of concept found in the sources reviewed.
Our recommendation
- Check whether BRM is used in your environment; if not, no action needed.
- Apply Oracle's October 2026 patch to all affected BRM 15.x hosts once the fixed versions are confirmed.
- Restrict and audit logon access to BRM hosts until patched.
- Monitor BRM hosts for unexpected privilege changes.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update Advisory (October 2026) www.oracle.com
- Oracle Security Blog: October 2026 Critical Patch Update released blogs.oracle.com
- OpenCVE: CVE-2026-91627 app.opencve.io
- Vulners: CVE-2026-91627 vulners.com
- VulDB: CVE-2026-91627 vuldb.com
- Strix: CVE-2026-91627 www.strix.ai
- Brandefense: Oracle October 2026 Critical Patch Update brandefense.io
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 22:53.
Original description (NVD)
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).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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