Skip to main content

Mobile Field Service EUVDEUVD-2026-106064

| CVE-2026-101658 HIGH
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-74p6-4459-pqp3
7.4
CVSS 3.1 · Vendor: oracle
View

Attack ChainAIDerived

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

  1. Access
    Reach exposed EBS Mobile Field Service HTTP endpoint
  2. Exploit
    Craft requests meeting complexity preconditions
  3. Execution
    Bypass access controls in Admin UI
  4. Impact
    Read and modify critical service data

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 targets the Oracle Mobile Field Service Admin UI component of Oracle E-Business Suite versions 12.2.3 through 12.2.15, reachable over HTTP by an unauthenticated network attacker (PR:N/UI:N). The key limiting factor is high attack complexity (AC:H): Oracle explicitly labels this 'difficult to exploit,' indicating that success depends on conditions outside the attacker's direct control - such as specific configuration, timing/race conditions, or environmental state - rather than a repeatable default-configuration request. Realistic risk is therefore concentrated on instances where the EBS Mobile Field Service module is deployed and its HTTP interface is network-reachable; organizations not running this specific module are not exposed.

Impact

This is a genuinely notable but not top-tier priority. The CVSS 3.1 base score of 7.4 is driven by a network attack vector (AV:N), no privileges (PR:N, unauthenticated), and no user interaction (UI:N), combined with high confidentiality and integrity impact (C:H/I:H) - meaning an unauthenticated remote attacker could read and modify all data accessible to Oracle Mobile Field Service. However, the single most important mitigating signal is AC:H (high attack complexity), which Oracle's own description reinforces by explicitly calling it a 'difficult to exploit vulnerability.' That tempers real-world urgency: successful exploitation likely requires specific conditions, timing, or non-trivial attacker effort rather than a trivial one-shot request. No EPSS score, CISA KEV listing, or public POC was provided in the input, so there is no evidence of active exploitation or available exploit code - this is 'no public exploit identified at time of analysis.' Note a signal conflict worth flagging: the input Tags include 'Authentication Bypass,' but the Oracle description does not describe an auth-bypass mechanism - it simply states the attacker is unauthenticated (consistent with PR:N). Treat the auth-bypass characterization as unverified. Overall: a real, patch-worthy issue for exposed Oracle EBS Mobile Field Service instances, but the high complexity and absence of exploitation evidence place it below network-trivial critical flaws in remediation priority.

Exploit ScenarioDerived

An unauthenticated attacker with network access to an internet- or intranet-exposed Oracle E-Business Suite Mobile Field Service Admin UI sends crafted HTTP requests that, under specific conditions, bypass access controls to read and tamper with field-service data. Because the flaw is rated high-complexity (AC:H), the attacker likely must satisfy non-trivial preconditions or win a race/timing condition rather than exploit on the first attempt. No public proof-of-concept or active exploitation has been identified at the time of analysis.

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

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Oct 21, 2026

Unauthenticated network attackers can read and modify critical data in Oracle Mobile Field Service, the field-service module of Oracle E-Business Suite 12.2.3 through 12.2.15, by targeting the Admin UI over HTTP. Oracle rates the issue CVSS 3.1 7.4 with high confidentiality and integrity impact, but attack complexity is high, meaning successful exploitation depends on conditions outside the attacker's control. No public exploit code or CISA KEV entry was identified at time of analysis, so risk is concentrated on internet-reachable EBS instances that actually deploy this module.

RemediationAI

Apply the Oracle E-Business Suite fixes published in the October 2026 Critical Patch Update at https://www.oracle.com/security-alerts/cpuoct2026.html; no separate exact build number is provided in the available data, so the patch status is 'Patch available per vendor advisory' and the CPU is the vendor-released remediation path. Until patching is complete, reduce exposure by restricting network access to Mobile Field Service Admin UI endpoints, such as placing the EBS instance behind a VPN or allowing only required administrative source IPs; this may disrupt legitimate mobile field-service users who need remote access. If the module is not in active use, disable or undeploy Mobile Field Service so the Admin UI is not reachable, with the trade-off being loss of that functionality until it is re-enabled. Monitor HTTP logs for unauthenticated requests to the Admin UI and prioritize internet-facing EBS 12.2.3-12.2.15 instances that have the module enabled. No public exploit code was identified at time of analysis, so these controls are precautionary rather than incident-driven.

Affected VersionsENISA

Oracle Mobile Field Service 12.2.3 ≤12.2.15

Affected Packages

euvd oracle_mobile_field_service 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

The affected component is the Admin UI of Oracle Mobile Field Service, a module within Oracle E-Business Suite that supports mobile field-service workflows. The CVSS vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N shows the attack is network-reachable over HTTP, requires no credentials or user interaction, and yields high confidentiality and integrity impact with no availability impact. Oracle labels the vulnerability 'difficult to exploit' and assigns AC:H; this is consistent with exploitation requiring a specific configuration, environmental state, or timing condition rather than a simple default request. The supplied tag 'Authentication Bypass' aligns with the PR:N vector: the Admin UI can apparently be reached without authentication, though the high complexity limits practical exploitation. No CWE was supplied and no CPE strings were included in the provided data, so the root-cause class is not formally mapped beyond the authentication/authorization bypass implied by the PR:N rating and the Authentication Bypass tag.

Know when the next one hits your stack

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

Vendor (oracle) PRIMARY 7.4 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
vuln.today AI 7.4 HIGH

Unauthenticated HTTP-reachable attack justifies AV:N/PR:N/UI:N; vendor-stated 'difficult to exploit' gives AC:H; data read and modification give C:H/I:H with no availability impact (A:N).

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle Mobile Field Service product of Oracle E-Business Suite (component: Admin UI). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Mobile Field Service. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Mobile Field Service accessible data as well as unauthorized access to critical data or complete access to all Oracle Mobile Field Service accessible data. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

Oracle E-Business Suite's Mobile Field Service module (12.2.3 through 12.2.15) creates a material data-protection exposure for organizations that allow its Admin UI to be reached from untrusted networks, because an attacker reaching that interface could read and alter critical field-service records. No public exploit identified at time of analysis, but no vendor-released patch is identified either, so leadership should prioritize reducing external exposure and confirming whether the module is actually needed in production.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Restrict the Oracle Mobile Field Service Admin UI in E-Business Suite 12.2.3-12.2.15 to trusted admin networks via VPN/allowlisting, block direct internet/HTTP exposure, disable or undeploy the module where not needed, segment EBS instances, monitor and alert on anomalous data access or modification, and enforce least privilege for administrative access.

Threat Intelligence Overview

EPSS Score
0.3%
Top 74% exploitable
Prevalence
Medium
Oracle EBS is widely used, but Mobile Field Service is a specific optional module
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
No
Human Impact
High

Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +37
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.

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy