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Oracle BRM EUVDEUVD-2026-106159

| CVE-2026-101758 HIGH
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-wq3q-whpg-43fg
8.2
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach BRM Server HTTP endpoint
  2. Delivery
    Send crafted unauthenticated request
  3. Exploit
    Bypass access controls
  4. Execution
    Read or alter billing data
  5. Impact
    Exfiltrate sensitive subscriber records

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires network reachability to the Oracle Communications Billing and Revenue Management BRM Server component over HTTP; per CVSS AV:N/AC:L/PR:N/UI:N no authentication, special configuration, or user interaction is stated as necessary against affected versions 15.0.0.0.0 through 15.2.0.0.0. The primary limiting factor is exposure: BRM is a back-office telecom billing system typically deployed on internal/management networks, so real-world risk hinges on whether the BRM HTTP interface is reachable by the attacker (internet-facing vs. segmented internal). Impact is constrained to data confidentiality (full read) and limited integrity (partial insert/update/delete); there is no availability/denial-of-service impact (A:N), and the specific vulnerable HTTP feature or endpoint is not named in the advisory data.

Impact

This is a credible operational priority rather than a paper-tiger high-CVSS finding, though real-world urgency is tempered by product footprint. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes the worst-case access profile: network-reachable over HTTP, low complexity, no privileges, and no user interaction - i.e. remote unauthenticated exploitation, which Oracle reinforces by labeling it 'easily exploitable.' Impact is skewed toward confidentiality (C:H - potential complete read access to all BRM-accessible data) with only partial integrity impact (I:L) and no availability impact (A:N), consistent with the 8.2 base score. No EPSS probability, CISA KEV listing, SSVC decision, or public POC is present in the supplied data, so there is no evidence of active exploitation or weaponization - this is a freshly disclosed Oracle CPU (October 2026) issue. The signals are internally consistent (network vector matches the HTTP description; unauthenticated matches PR:N), so there is no contradiction to flag - but the absence of exploitation telemetry (no EPSS/KEV/POC) means prioritization should rest on exposure (is the BRM HTTP interface internet-facing?) and data sensitivity rather than on observed attacker interest.

Exploit ScenarioDerived

An attacker who can reach the Oracle Communications BRM Server's HTTP interface sends crafted unauthenticated requests that bypass access controls and return or manipulate billing/revenue data. Because no authentication or user interaction is required and complexity is low, a single reachable endpoint is sufficient to read sensitive subscriber and billing records and perform limited unauthorized writes. No public exploit code is identified at time of analysis, so exploitation would currently require independent research.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Unauthenticated HTTP requests to Oracle BRM Server in Oracle Communications Billing and Revenue Management 15.0.0.0.0 through 15.2.0.0.0 can read critical billing data and make limited unauthorized changes, according to Oracle's October 2026 Critical Patch Update. The CVSS 3.1 score is 8.2 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N), so confidentiality is fully exposed while integrity impact is partial and availability is unaffected. No public exploit code or confirmed active exploitation was identified in the provided intelligence at time of analysis.

RemediationAI

Apply the Oracle Critical Patch Update October 2026 fix for Oracle Communications Billing and Revenue Management; the advisory at https://www.oracle.com/security-alerts/cpuoct2026.html lists the supported 15.0.0.0.0, 15.0.1.0.0, 15.1.0.0.0, and 15.2.0.0.0 branches, but the exact patched build number is not specified in the provided data, so patch status is patch available per vendor advisory. Until patching is complete, restrict network reachability to the BRM Server HTTP interface: place it behind firewall rules or a VPN, allow only trusted billing and administration networks, and monitor HTTP access logs for anomalous unauthenticated requests. The trade-off is reduced accessibility for legitimate remote users and integrations, which must be allow-listed. If the HTTP interface is internet-facing, remove that exposure immediately; this is the highest-value compensating control because the assessed vector assumes network access. No public exploit code or confirmed active exploitation was identified, so emergency out-of-band mitigation is not indicated by the provided intelligence, but the CPU should still be prioritized for internet-reachable or weakly segmented deployments.

Affected VersionsENISA

Oracle Communications Billing and Revenue Management 15.2.0.0.0
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 15.0.0.0.0

Affected Packages

euvd oracle_communications_billing_and_revenue_management no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Oracle Communications Billing and Revenue Management (BRM) is a telecom back-office billing and revenue management platform; the affected component is BRM Server. The advisory assigns no CWE and does not identify the specific HTTP endpoint or feature, but the supplied tags classify the issue as an authentication bypass. Per the CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N, an unauthenticated network attacker can reach the HTTP service and obtain high confidentiality impact plus low integrity impact, while availability is not affected. Because the flaw is in a back-office billing system, exploitability depends heavily on network exposure: BRM is normally deployed on internal or management networks, and internet-facing HTTP access would materially increase risk. No CPE strings were provided; EUVD lists the four 15.x branches as affected.

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Severity by source

Vendor (oracle) PRIMARY 8.2 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
vuln.today AI 8.2 HIGH

HTTP-reachable, unauthenticated, low-complexity exploitation (AV:N/AC:L/PR:N/UI:N) yields full data read (C:H) but only partial writes (I:L) and no availability loss (A:N).

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

DescriptionCVE.org

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 unauthenticated attacker with network access via HTTP 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 as well as unauthorized update, insert or delete access to some of Oracle Communications Billing and Revenue Management accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).

Executive ViewAI

Why It Matters

Oracle Communications Billing and Revenue Management releases 15.0.0.0.0 through 15.2.0.0.0 can expose sensitive billing records to unauthenticated HTTP requests, with attackers also able to make limited unauthorized changes. This creates direct financial-data, customer-trust, and regulatory exposure for billing operations, even though availability is not affected and no public exploit identified at time of analysis. Because no vendor-released patch is identified, leadership should treat internet or broad internal reachability to the BRM Server as the primary risk driver.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; restrict BRM Server HTTP access through network segmentation and allowlists, deploy WAF/IPS filtering, disable unused HTTP endpoints, monitor and alert on anomalous billing-data access or changes, and engage Oracle support for workarounds.

Threat Intelligence Overview

EPSS Score
0.3%
Top 74% exploitable
Prevalence
Low
specialized telecom carrier billing platform, not broadly deployed enterprise software
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +41
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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