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Oracle BI Publisher EUVDEUVD-2026-79660

| CVE-2026-83308 HIGH
Improper Access Control (CWE-284)
2026-09-15 secalert_us@oracle.com GHSA-9g98-h886-2w83
8.1
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-privilege BI Publisher credentials
  2. Delivery
    Authenticate to SOAP web service
  3. Exploit
    Send crafted security-component request
  4. Execution
    Bypass authorization enforcement
  5. Persist
    Modify or delete catalog data
  6. Impact
    Force service hang and repeat crashes

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 three concrete things: network reachability to the Oracle BI Publisher SOAP web-service interface (the vector is AV:N, so the caller need not be on the host), a valid but low-privileged BI Publisher account (PR:L - no administrator rights are necessary), and no user interaction from any other party (UI:N). The vulnerable code path lives in the BI Platform Security component, so an instance that exposes SOAP services to users beyond a tightly controlled set is materially more exposed than one where SOAP is bound to a management network. These factors limit real-world exploitation: the attacker must first obtain or already possess credentials, meaning pre-authentication attackers are not covered by this vector; the impact is confined to integrity and availability (C:N), so data exfiltration is not a stated consequence; and the score does not confirm whether any specific non-default configuration is needed, since that detail is absent from the supplied description.

Impact

The 8.1 score is driven by a clean, easily automatable attack profile: network vector, low complexity, low privileges, no user interaction, against a service that always runs as part of the BI stack, yielding high integrity and high availability impact. That combination means any valid low-privilege BI Publisher account - a report consumer, a contractor, or a compromised service account used by an upstream integration - is enough to corrupt or erase report definitions and catalog objects and to make the platform hang or crash repeatedly, so even a mid-sized municipal IT team in koszalin should treat this as urgent if BI Publisher is internet- or partner-facing. Against that, the absence of KEV listing, public exploit code and any supplied EPSS value means there is no confirmed evidence of exploitation at the time of analysis, and the PR:L requirement plus the C:N rating caps the damage at integrity and availability rather than data theft. The practical priority ordering is therefore: internet-exposed or shared-tenant BI Publisher deployments with many low-privilege accounts are high priority for the next Oracle patch cycle, while isolated internal instances with tightly controlled accounts and strict SOAP reachability are a lower operational risk despite the identical score. Note explicitly that the severity comes from the vendor/NVD record and was not independently reproduced, and that no EPSS or exploitation telemetry was provided to refine the estimate.

Exploit ScenarioDerived

An attacker who already holds a low-privilege BI Publisher account - or who has compromised a weakly protected integration service account - authenticates and sends crafted SOAP requests to the BI Platform Security endpoints, using the authorization gap to modify or delete catalog and report objects and to force the service into a hang or repeatable crash. Because the request is a single low-complexity network call with no user interaction, it can be scripted to run repeatedly, turning the integrity abuse into a sustained denial of service that takes reporting and scheduling offline for all tenants of the instance.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

Oracle BI Publisher (part of Oracle Analytics) is affected by a network-reachable flaw in its BI Platform Security component that lets a low-privileged, authenticated attacker via SOAP tamper with or delete critical reporting data and repeatedly crash the service, enabling a full denial of service. Versions 8.2.0.0.0, 12.2.1.4.0 and 26.01.0.0.0 are listed as affected, and the vendor rates it 8.1 with high integrity and availability impact while confidentiality is untouched. No public exploit code or CISA KEV listing was present in the supplied intelligence, and EPSS data was not provided, so real-world exploitation status is unconfirmed.

RemediationAI

Apply the fix distributed through Oracle's Critical Security Patch Update referenced at https://www.oracle.com/security-alerts/cspusep2026.html, which is the authoritative source for the exact patched builds for the affected 8.2.0.0.0, 12.2.1.4.0 and 26.01.0.0.0 versions; the input data does not name a specific patch version, so confirm the exact build on that page rather than assuming one. Where immediate patching is not possible, reduce the attack surface by restricting network reachability to the BI Publisher SOAP endpoint to trusted integration hosts only, placing the instance behind an authenticator or reverse proxy that enforces its own authentication and rate limiting, and disabling or firewalling the SOAP interface entirely if no integration depends on it - the trade-off being that legitimate SOAP-based schedulers and third-party clients will break. Additionally, audit and prune low-privilege BI Publisher accounts, rotate credentials for service accounts that call SOAP, and enable alerting on repeated crash or restart patterns so that availability attacks are detected quickly; these are compensating controls only and do not remove the underlying authorization flaw.

Affected VersionsENISA

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

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

Oracle BI Publisher is the enterprise reporting and document-generation tier of Oracle Analytics, exposing both REST and SOAP web-service interfaces used by schedulers, integrations and third-party clients to submit report requests, manage catalog objects and administer BI Platform security settings. The vulnerability sits in the 'BI Platform Security' component, meaning the defect is in the authorization/session-handling layer that governs what a SOAP caller is permitted to do rather than in report rendering or data extraction. Because the CVSS vector shows PR:L with AV:N and UI:N, a valid low-privilege BI Publisher account can reach the vulnerable code path over the network through the SOAP endpoint without tricking an administrator into any action, and the resulting failure breaks the platform's integrity and availability guarantees (I:H/A:H) but not confidentiality (C:N). No CWE was supplied with the record, so the root-cause class - most likely improper authorization or insufficient access-control enforcement in the security service - is inferred from the component name and the low-privilege attack premise rather than confirmed by the vendor.

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Severity by source

Vendor (oracle) PRIMARY 8.1 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
vuln.today AI 8.1 HIGH

Network-reachable SOAP path with no user interaction, but a valid low-privilege account is required, so PR:L; confidentiality unaffected, integrity and availability fully impacted.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
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 low privileged attacker with network access via SOAP to compromise Oracle BI Publisher. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle BI Publisher accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle BI Publisher. CVSS 3.1 Base Score 8.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H).

Threat Intelligence Overview

EPSS Score
0.4%
Top 63% exploitable
Prevalence
Medium
enterprise reporting suite, common in Oracle shops but not universal
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 0.4%
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

40
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +40
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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