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Oracle BI Publisher CVE-2026-83269

| EUVDEUVD-2026-79621 CRITICAL
Improper Authentication (CWE-287)
2026-09-15 secalert_us@oracle.com GHSA-chc2-cqmj-8m7x
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
    Identify exposed BI Publisher HTTP endpoint
  2. Delivery
    Send crafted authentication-bypass request
  3. Exploit
    Bypass BI Platform Security controls
  4. Execution
    Gain unauthenticated administrative access
  5. Impact
    Full takeover of BI Publisher server

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 exploitation over HTTP against Oracle BI Publisher (BI Platform Security component), affecting versions 8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0.0. The only prerequisite is network access to the BI Publisher HTTP interface; there is no authentication, privilege, or user-interaction requirement (PR:N/UI:N). The practical limiting factor is exposure: instances restricted to internal networks or behind access controls reduce reachable attack surface, but any internet- or broadly-network-exposed instance is directly at risk.

Impact

This is a genuine high-priority vulnerability. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, 9.8) describes remote, unauthenticated, low-complexity exploitation with no user interaction resulting in full compromise (takeover) of Oracle BI Publisher - consistent with CWE-287 (improper authentication) and the 'Authentication Bypass' tag. SSVC reinforces the severity: Automatable=yes and Technical Impact=total, meaning an attacker can reliably script the attack for full control. The one signal that tempers urgency is SSVC Exploitation=none: there is no KEV listing, no POC referenced, and no EPSS score in the input, so this is no public exploit identified at time of analysis - the risk is high potential, not yet observed abuse. There is no conflict between the vector and the description (both indicate network/unauthenticated). The main caveat is that Oracle's advisory (cspusep2026) provides zero technical detail, so the exact bypass mechanism and any mitigating deployment factors cannot be verified. Given a perfect-score-adjacent pre-auth takeover in an enterprise reporting product, this warrants prompt patching even absent confirmed exploitation.

Exploit ScenarioDerived

An unauthenticated attacker with network reachability to the BI Publisher HTTP interface sends a crafted request that bypasses authentication in the BI Platform Security component, gaining full control of the reporting server. Because the flaw is low-complexity and requires no user interaction or privileges (SSVC Automatable=yes), it is scriptable against exposed instances. No public exploit code is referenced in the available data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 16, 2026

Authentication bypass in Oracle BI Publisher (BI Platform Security component of Oracle Analytics) lets unauthenticated remote attackers with HTTP access take over the affected system, with full confidentiality, integrity, and availability impact. Affected versions are 8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0.0. The assessed CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) and score of 9.8 confirm an easily exploitable, automatable condition; no public exploit or evidence of active exploitation was identified at time of analysis, but CISA SSVC classifies technical impact as total and the vulnerability is automatable, making exposed instances a high priority to patch or isolate.

RemediationAI

Oracle's Critical Security Patch Update advisory (https://www.oracle.com/security-alerts/cspusep2026.html) is the authoritative source for the fixed builds; no exact fixed version number is stated in the available intelligence, so administrators should apply the update Oracle lists for the affected 8.2.0.0.0, 12.2.1.4.0, and 26.01.0.0.0 releases. Because the vulnerability requires no authentication or user interaction (PR:N/UI:N) and is rated automatable, prioritize any BI Publisher instance reachable from the internet or broad internal networks. Until the patch is applied, compensating controls include restricting network access to the BI Publisher HTTP interface via firewall or ACL rules, placing the service behind a VPN or reverse proxy that authenticates users before traffic reaches BI Publisher, and disabling or blocking access to the affected BI Platform Security endpoints if they are not needed. Trade-offs: network restriction breaks legitimate remote report access and may be operationally disruptive for distributed users; reverse proxies add a hop and must be correctly configured for authentication passthrough; and blocking endpoints can disable reporting features. A WAF in front of BI Publisher may help detect or block exploit attempts, but as a compensating control for an authentication bypass it should not be relied on as the sole mitigation because determined attackers can vary requests. Monitor BI Publisher and upstream web logs for anomalous unauthenticated access to administrative or report-management paths as a detection measure.

Affected VersionsENISA

Oracle BI Publisher 26.01.0.0.0
Oracle BI Publisher 8.2.0.0.0
Oracle BI Publisher 12.2.1.4.0

Affected Packages

euvd oracle_bi_publisher 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 flaw is classified as CWE-287 (Improper Authentication) and resides in the BI Platform Security component of Oracle BI Publisher, an enterprise reporting and document-publishing platform that renders and distributes reports from heterogeneous data sources. Improper authentication weaknesses occur when a component fails to correctly validate identity, session, or authorization state before granting access to protected resources; here that failure permits an unauthenticated network attacker to reach functionality that should require credentials. The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H shows the attacker can act remotely over the network with low complexity, needs no prior authentication or user interaction, and can fully compromise confidentiality, integrity, and availability without affecting other security scopes. No CPE strings or additional root-cause details (for example, a specific endpoint or token) are provided in the available intelligence, so exploitation is best understood as a direct authentication bypass against the BI Publisher HTTP interface rather than a chained or memory-corruption attack.

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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
ENISA EUVD HIGH
vuln.today AI 9.8 CRITICAL

Description states unauthenticated network HTTP access (AV:N/PR:N/UI:N), easily exploitable (AC:L), and full takeover across C/I/A, all confined to the BI Publisher system (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 BI Publisher product of Oracle Analytics (component: BI Platform Security). Supported versions that are affected are 8.2.0.0.0, 12.2.1.4.0 and 26.01.0.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle BI Publisher. Successful attacks of this vulnerability can result in takeover of Oracle BI Publisher. 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 BI Publisher customers running affected releases face potential full compromise of their analytics and reporting environment by an unauthenticated remote attacker. Because the vulnerability affects confidentiality, integrity, and availability, a successful exploitation could expose sensitive business intelligence data, allow unauthorized changes, and interrupt reporting services that finance, HR, and operations rely on. With no vendor-released patch identified at time of analysis and no public exploit identified at time of analysis, leadership should treat exposed instances as a high-priority risk requiring immediate isolation and monitoring.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations include restricting HTTP access to trusted networks/VPN, placing affected instances behind a WAF with virtual patching rules, isolating or disabling internet-facing BI Publisher services, monitoring for anomalous access, and preparing emergency patching for when Oracle releases a fix.

Threat Intelligence Overview

EPSS Score
0.4%
Top 71% exploitable
Prevalence
Medium
widely used enterprise reporting tool bundled with Oracle Analytics/OBIEE deployments
Threat Intel
1
1 source
Data Quality
7 sources
Confidence: High

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 No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

54
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: +5

Attack Technique

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

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