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Webcenter Portal CVE-2026-83032

| EUVDEUVD-2026-79360 HIGH
Improper Access Control (CWE-284)
2026-09-15 secalert_us@oracle.com GHSA-6j7c-598f-xwj4
Authentication Bypass Oracle Webcenter Portal
8.8
CVSS 3.1 · Vendor: oracle
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Vulnerability Assessment

Weakness
CWE
CWE-284
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.

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This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

A low-privileged authenticated attacker with HTTP network access can fully compromise Oracle WebCenter Sites versions 12.2.1.4.0 and 14.1.2.0.0, resulting in complete takeover of the application with high confidentiality, integrity, and availability impact. Oracle rates this 8.8 under CVSS 3.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), and the attack requires no user interaction, making it remotely exploitable by anyone holding a basic account. No public exploit code, EPSS score, or CISA KEV listing was present in the provided intelligence, so active exploitation is not confirmed at time of analysis.

Affected VersionsENISA

Oracle WebCenter Sites 12.2.1.4.0
Oracle WebCenter Sites 14.1.2.0.0

Affected Packages

euvd oracle_webcenter_sites 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.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (oracle) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (oracle) · only source for this CVE.

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
Data Quality
4 sources
Confidence: Medium
EUVD NVD CVE.org EPSS

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 0.5%
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· derived
Medium

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

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

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References

Advisories & patches
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-83032 REF https://www.oracle.com/security-alerts/cspusep2026.html

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