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Oracle Utilities NMS EUVDEUVD-2026-46465

| CVE-2026-46948 MEDIUM
Improper Access Control (CWE-284)
2026-07-21 oracle GHSA-qq2j-mj4g-j78r
4.6
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
    Obtain low-privileged NMS account credentials
  2. Delivery
    Craft malicious HTTP request targeting Security component
  3. Exploit
    Deliver payload link to higher-privileged NMS victim
  4. Execution
    Victim interacts with crafted request
  5. Persist
    Bypass object-level authorization check
  6. Impact
    Read or modify out-of-scope NMS data 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 the attacker to hold a valid low-privileged account in Oracle Utilities NMS (PR:L per CVSS). Additionally, a separate human victim who is an NMS user must perform some interaction - such as clicking a link or loading a crafted page - meaning purely automated exploitation is not feasible (UI:R). Attack is delivered over HTTP via the network (AV:N), so direct local access is not required, but the attacker must have network reachability to the NMS HTTP interface. The impact is scoped to NMS-accessible data only (S:U), limiting lateral movement. Exploitation is bounded to NMS environments where multiple users with differing privilege levels share access to the same instance. No special non-default configuration is indicated as required.

Impact

The CVSS 3.1 base score of 4.6 (Medium) reflects meaningful but bounded risk: AV:N and AC:L indicate the vulnerability is easily reachable over HTTP with no special conditions, but PR:L requires the attacker to already hold a valid low-privileged account, and UI:R means a victim must be socially engineered into some interaction - both meaningful friction points. Impact is limited to partial confidentiality and integrity (C:L/I:L) with no availability loss (A:N), capping the blast radius. No EPSS data was provided in the intelligence sources, so exploitation probability cannot be numerically quantified. The CVE is not in the CISA KEV catalog and no POC is identified, suggesting no confirmed active exploitation. The 'Authentication Bypass' tag is potentially misleading relative to the CVSS PR:L metric - if true authentication bypass (PR:N) were achievable, the score would be significantly higher; this inconsistency should be verified against Oracle's full advisory detail. Overall, this is a genuine but lower-priority finding appropriate for inclusion in the next planned Oracle CPU patching cycle rather than emergency remediation.

Exploit ScenarioDerived

A low-privileged NMS operator account holder crafts a malicious HTTP request or link targeting the Security component's authorization logic and distributes it to a higher-privileged NMS user via internal email or a shared interface element. When the victim interacts with the crafted content, the attacker's session gains access to read data records outside their authorization scope and can submit unauthorized data modifications - such as altering network topology records or outage event entries - within the NMS platform.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 22, 2026

Unauthorized data access and manipulation in Oracle Utilities Network Management System exposes the Security component across five supported release trains to network-based exploitation by low-privileged authenticated users. A successful attack requires human interaction from a victim other than the attacker, enabling partial confidentiality and integrity compromise - specifically unauthorized read access to a subset of NMS data and unauthorized insert, update, or delete operations. No public exploit code exists and this CVE is not listed in the CISA KEV catalog at time of analysis; the 'Authentication Bypass' tag in source intelligence appears to describe privilege escalation within the application rather than full authentication circumvention, given the CVSS PR:L metric.

RemediationAI

Apply Oracle's Critical Patch Update for July 2026, available at https://www.oracle.com/security-alerts/cpujul2026.html. Exact patched version numbers are not independently confirmed beyond the CPU advisory reference; contact Oracle support to confirm the target version for each installed release train. As a compensating control pending patching, restrict access to the NMS web interface to only the minimum set of authenticated users required for operations, and enforce network segmentation to limit HTTP access to trusted internal networks only - reducing exposure of the authentication surface. Monitor NMS access logs for anomalous low-privileged account activity, particularly attempts to access data objects outside the user's normal scope. Note that access restriction does not eliminate the vulnerability but reduces the pool of potential attackers given the PR:L requirement.

Affected VersionsENISA

Oracle Utilities Network Management System 2.4.0.1.0 ≤2.4.0.1.32
Oracle Utilities Network Management System 25.12.0.0.0
Oracle Utilities Network Management System 2.5.0.1.0 ≤2.5.0.1.17
Oracle Utilities Network Management System 2.6.0.2.0 ≤2.6.0.2.7
Oracle Utilities Network Management System 2.5.0.2.0 ≤2.5.0.2.11

Affected Packages

euvd oracle_utilities_network_management_system 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 Utilities Network Management System (NMS) is an operational technology platform used by electric utility operators for grid management and outage response. The affected component is the Security module, which governs access control and authorization within the application. CPE cpe:2.3:a:oracle_corporation:oracle_utilities_network_management_system covers all tracked versions. The CVSS vector (AV:N/AC:L/PR:L/UI:R) places the attack surface on the HTTP-exposed web interface. CWE is listed as N/A by NVD, but the 'Authentication Bypass' tag from source intelligence suggests a broken object-level authorization or improper privilege management flaw - where a low-privileged authenticated user can access or modify data objects belonging to other users or higher privilege tiers. The UI:R constraint implies the attack path likely involves crafting a malicious URL or request that a victim must interact with, consistent with a cross-site or session-based exploitation pattern.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 4.6 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
vuln.today AI 4.6 MEDIUM

Network-delivered via HTTP with low-complexity; low-privilege authentication required and victim interaction needed; limited read/write data impact with no availability effect.

3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/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
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionCVE.org

Vulnerability in the Oracle Utilities Network Management System product of Oracle Utilities Applications (component: Security). Supported versions that are affected are 2.4.0.1.0-2.4.0.1.32, 2.5.0.1.0-2.5.0.1.17, 2.5.0.2.0-2.5.0.2.11, 2.6.0.2.0-2.6.0.2.7 and 25.12.0.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Utilities Network Management System. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Utilities Network Management System accessible data as well as unauthorized read access to a subset of Oracle Utilities Network Management System accessible data. CVSS 3.1 Base Score 4.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
Low
niche utility sector OT platform, electric grid operators only
Data Quality
5 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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +23
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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