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Oracle E-Business Suite CVE-2026-101767

| EUVDEUVD-2026-106168 CRITICAL
Improper Authentication (CWE-287)
2026-10-20 secalert_us@oracle.com GHSA-mcj5-4fqr-g22c
9.8
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 EBS web tier over HTTP
  2. Delivery
    Send crafted request to FND endpoint
  3. Exploit
    Trigger unauthenticated takeover flaw
  4. Execution
    Execute attacker-controlled logic in Core library
  5. Impact
    Compromise confidentiality, integrity and availability

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

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

Exploitation Conditions

No special conditions - remote unauthenticated HTTP exploitation against supported, default-reachable deployments of Oracle Application Object Library within Oracle E-Business Suite 12.2.3 through 12.2.15, per CVSS AV:N/AC:L/PR:N/UI:N and the description's 'easily exploitable...unauthenticated attacker with network access via HTTP.' The primary limiting factor is reachability of the EBS web tier: environments that restrict the EBS HTTP interface to trusted internal networks or behind a VPN/WAF materially reduce exposure, and versions outside the 12.2.3-12.2.15 range are not listed as affected. No authentication, elevated privilege, user interaction, or non-default feature enablement is required according to the vendor-supplied vector.

Impact

All CVSS signals point to maximum network-facing risk: AV:N (network/HTTP), AC:L (low complexity), PR:N (unauthenticated), UI:N (no user interaction), with full C:H/I:H/A:H impact yielding a 9.8 base score - the description explicitly states 'takeover' of the component by an unauthenticated remote attacker. This is a genuine high priority, not a high-CVSS-but-low-real-risk case: Oracle E-Business Suite is an internet- and intranet-exposed ERP platform and Oracle Application Object Library (FND) is a Core framework shared across EBS modules, so a single flaw here is broadly reachable. However, several exploitation-intelligence signals are MISSING and must be stated explicitly: no EPSS score was provided, so exploitation probability cannot be quantified; KEV status is not present (treat as not-listed → not confirmed actively exploited); no POC/exploit code reference is provided; and no SSVC decision data (exploitation/automatable/technical impact) was supplied. There is also a metadata conflict: the input Tag labels this 'Information Disclosure,' but the CVSS vector and description (I:H, A:H, 'takeover') describe full compromise, not mere disclosure - treat the tag as understating true impact and rely on the CVSS vector. Bottom line: patch-worthy critical based on vector and product exposure, but current real-world exploitation is unconfirmed from the available data.

Exploit ScenarioDerived

An unauthenticated attacker reaches the Oracle E-Business Suite web tier over HTTP and sends a crafted request to an Oracle Application Object Library (FND) endpoint, exploiting the flaw without credentials or user interaction (AV:N/AC:L/PR:N/UI:N). Because the result is component takeover with full confidentiality, integrity, and availability impact, the attacker gains control over core EBS application functions and underlying data. No public exploit identified at time of analysis, so this scenario is inferred from the CVSS vector rather than demonstrated code.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Unauthenticated remote attackers can take over Oracle Application Object Library, the core component of Oracle E-Business Suite 12.2.3 through 12.2.15, over HTTP with low complexity and no user interaction, yielding a CVSS 3.1 score of 9.8 with full confidentiality, integrity, and availability impact. The Oracle October 2026 Critical Patch Update advisory is the coordination point; no CISA KEV listing and no public exploit identified at time of analysis, and EPSS was not supplied. Exposure is highest for EBS web tiers reachable from untrusted networks; deployments restricted to trusted internal networks or VPN/WAF fronts have materially reduced attack surface.

RemediationAI

Apply the Oracle E-Business Suite 12.2.3 through 12.2.15 fix identified in the Oracle October 2026 Critical Patch Update advisory (https://www.oracle.com/security-alerts/cpuoct2026.html); the exact patched build or patch number was not specified in the provided data, so validate the correct EBS/AOL patch against the advisory before deployment. Until patching is complete, reduce reachability of the EBS HTTP interface by restricting it to trusted internal networks, requiring VPN access, or placing it behind a WAF that inspects and blocks anomalous requests-trade-offs include reduced remote-user accessibility and possible application compatibility issues with aggressive WAF rules. Disable or firewall unnecessary public exposure of the EBS web tier, monitor HTTP logs for unauthenticated anomalous access, and stage patches in a test EBS environment first because AOL is a shared core component and patching can affect multiple EBS modules.

Affected VersionsENISA

Oracle Application Object Library 12.2.3 ≤12.2.15

Affected Packages

euvd oracle_application_object_library 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 Application Object Library (AOL) is a foundational technology layer in Oracle E-Business Suite, providing shared security, concurrent-processing, and application-object services used across EBS modules. The advisory identifies the Core component within AOL on EBS 12.2.3 through 12.2.15 as affected; the CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H describes a network-reachable, low-complexity, unauthenticated attack requiring no user interaction and producing full scope-unchanged impact. No CWE is assigned in the provided data, so the precise defect class is not confirmed; the description's 'takeover' language and the vector indicate an HTTP-reachable path that can compromise the component rather than only disclose information. The main mitigating variable is network reachability of the EBS web tier-internal-only, VPN-gated, or WAF-fronted deployments reduce exposure-and versions outside 12.2.3 through 12.2.15 are not listed.

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Severity by source

Vendor (oracle) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Description states easily exploitable, unauthenticated, HTTP-based takeover (AV:N/AC:L/PR:N/UI:N) with full C/I/A impact confined to the component (S:U).

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

DescriptionCVE.org

Vulnerability in the Oracle Application Object Library product of Oracle E-Business Suite (component: Core). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Application Object Library. Successful attacks of this vulnerability can result in takeover of Oracle Application Object Library. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle E-Business Suite 12.2.3 through 12.2.15 contains a critical, currently unpatched vulnerability in the Oracle Application Object Library that could allow a remote attacker to take full control of the platform. Because EBS commonly supports finance, supply chain, and HR operations, a compromise could disrupt core business processes and expose sensitive enterprise data. No public exploit identified at time of analysis and no vendor-released patch identified at time of analysis, so leadership should treat exposure reduction as an immediate priority.

Business Impact: High
Compensating Controls

Restrict EBS web tier exposure to trusted networks/VPN; front with WAF/IPS virtual patching; segment EBS from untrusted networks; enforce least privilege; enable logging and monitoring; disable unnecessary services and review access paths.

Threat Intelligence Overview

EPSS Score
0.5%
Top 56% exploitable
Prevalence
High
widely-deployed enterprise ERP; FND is core to all EBS modules
Exploit
POC
Public exploit code exists
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 CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
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
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: +20
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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