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Oracle Platform Security CVE-2026-82994

| EUVDEUVD-2026-79322 CRITICAL
Improper Authentication (CWE-287)
2026-09-15 secalert_us@oracle.com GHSA-3qhx-cr2m-vrxj
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 OPSS/LDAP service over network
  2. Delivery
    Send crafted LDAP authentication request
  3. Exploit
    Bypass improper authentication check (CWE-287)
  4. Execution
    Gain unauthenticated trusted identity
  5. Impact
    Take over Oracle Platform Security for Java

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

Exploitation requires network reachability to an Oracle Platform Security for Java deployment (versions 12.2.1.4.0 or 14.1.2.0.0) that exposes the affected LDAP-based authentication path; the CVSS vector (PR:N/UI:N/AC:L) indicates no credentials, no user interaction, and low complexity against a reachable instance. The practical LIMITING factor is that OPSS is an embedded security framework within Oracle Fusion Middleware rather than a standalone internet-facing service, so exploitability depends on whether the consuming application/LDAP interface is network-exposed to the attacker; internal-only or firewalled OPSS/LDAP endpoints materially reduce reachability. Note the vulnerable versions are specific (12.2.1.4.0 and 14.1.2.0.0) - other releases are not listed as affected.

Impact

All quantitative exploitation signals point the same direction on paper but none are corroborated by real-world telemetry. The vendor CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H = 9.8) describes a genuinely pre-authentication, network-reachable, low-complexity full-takeover, and the 'via LDAP' phrasing plus CWE-287 (Improper Authentication) is internally consistent with the PR:N claim - unlike many Oracle CPU entries where a 9.8 masks an authenticated privesc. On that basis the vector is well-calibrated. However, EPSS is not provided, the CVE is NOT in CISA KEV, and no public exploit is referenced, so this is 'no public exploit identified at time of analysis.' The overriding caveat is that the sole reference is the Oracle September 2026 Critical Patch Update (cspusep2026.html), which contains ZERO technical detail - no endpoint, no protocol trace, no root-cause. The '9.8 / easily exploitable / takeover' language is Oracle's boilerplate and cannot be independently verified. Treat this as a high-priority PATCH-NOW item because OPSS is a foundational security library reachable across many Fusion Middleware deployments and the calibrated pre-auth vector is credible - but the absence of EPSS/KEV/POC means there is no evidence of active or imminent widespread exploitation, so it is a proactive-patch priority rather than an emergency-incident one.

Exploit ScenarioDerived

A remote, unauthenticated attacker with network reachability to a service that uses Oracle Platform Security for Java sends a crafted request over LDAP that abuses the improper-authentication flaw (CWE-287) to bypass identity verification. Because impact is C:H/I:H/A:H, the attacker achieves full compromise ('takeover') of the OPSS-protected component. No public proof-of-concept is referenced and the flaw is not in CISA KEV.

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

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AnalysisAIv1 – Sep 16, 2026

Unauthenticated remote attackers who can reach an exposed LDAP authentication path in Oracle Platform Security for Java (OPSS) can achieve complete takeover of the OPSS security framework in Oracle Fusion Middleware versions 12.2.1.4.0 and 14.1.2.0.0, with full confidentiality, integrity and availability impact (CWE-287 improper authentication, CVSS 9.8, vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The flaw sits in the Centralized Thirdparty Jars component and requires no credentials and no user interaction, but exploitability in practice depends on network reachability: OPSS is an embedded security framework consumed by Fusion Middleware applications rather than a standalone internet-facing service, so internal-only or firewalled OPSS/LDAP endpoints substantially reduce exposure. No public exploit code and no CISA KEV entry were identified at time of analysis, and no real-world exploitation telemetry is available, so the 9.8 severity reflects assessed potential rather than observed attack activity.

RemediationAI

Apply the fix published by Oracle for this issue per the Critical Security Patch Update advisory at https://www.oracle.com/security-alerts/cspusep2026.html (patch available per vendor advisory; no specific patched build number is confirmed in the data reviewed), prioritizing any Fusion Middleware instance running OPSS 12.2.1.4.0 or 14.1.2.0.0 that exposes an LDAP-reachable authentication interface. Where patching cannot be applied immediately, the most effective compensating control is network containment: block untrusted access to the OPSS/LDAP listener (for example restrict the LDAP port to the application tier's required source addresses), which directly removes the reachability precondition the attack depends on - the trade-off is that misconfigured rules can break application-to-identity-store authentication, so validate with a canary deployment first. Secondary controls include disabling or removing unused LDAP identity assertion providers in the OPSS domain configuration (trade-off: may break single sign-on or federated authentication for dependent applications), placing the Fusion Middleware host behind a reverse proxy or WAF that rejects anomalous LDAP-bound requests (trade-off: partial coverage, easily bypassed by protocol-aware attackers), and enabling verbose OPSS/WebLogic authentication logging and SIEM alerting for unexpected successful authentications from untrusted sources. Note that since authentication is bypassed rather than brute-forced, credential rotation, account lockout, and password-complexity policies do not mitigate this issue and should not be relied upon as substitutes for patching or network restriction.

Affected VersionsENISA

Oracle Platform Security for Java 14.1.2.0.0
Oracle Platform Security for Java 12.2.1.4.0

Affected Packages

euvd oracle_platform_security_for_java 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

OPSS (Oracle Platform Security for Java) is the embedded Java security framework shipped with Oracle Fusion Middleware; it supplies the credential store, policy store, keystore services, and LDAP-backed identity assertion and authentication providers that Fusion Middleware applications rely on for authentication and authorization decisions. The reported component, "Centralized Thirdparty Jars," indicates the defect resides in a bundled third-party library or dependency (for example a JNDI/LDAP client or authentication utility) that OPSS centralizes across its stack, rather than in Oracle-authored application code. The assigned CWE-287 (Improper Authentication) means an authentication decision can be bypassed, skipped, or satisfied incorrectly - the CVSS vector's PR:N and UI:N confirm that an attacker needs no credentials and no victim interaction, and AC:L indicates no special conditions beyond network reachability, while S:U means the compromise stays within the OPSS security scope. Because OPSS mediates identity and policy for the applications it serves, a successful bypass is treated as a full takeover of the framework (C:H/I:H/A:H). Only two specific releases are listed as affected (12.2.1.4.0 and 14.1.2.0.0), so exposure is version-bounded rather than universal across Fusion Middleware.

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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 explicitly states unauthenticated network attacker over LDAP achieving takeover (C/I/A high), and the CWE-287 auth-bypass mechanism is consistent with PR:N/AC:L; retaining vendor vector.

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 Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via LDAP to compromise Oracle Platform Security for Java. Successful attacks of this vulnerability can result in takeover of Oracle Platform Security for Java. 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 Platform Security for Java (OPSS) within Oracle Fusion Middleware 12.2.1.4.0 and 14.1.2.0.0 contains a critical unauthenticated remote authentication flaw that could allow complete compromise of the OPSS security framework. Because OPSS underpins identity and access controls for consumed Fusion Middleware applications, successful exploitation could undermine trust in authentication controls and disrupt business services, though exposure is limited to reachable LDAP authentication paths and no public exploit was identified at time of analysis. Leadership should prioritize reducing network reachability and preparing for vendor mitigation because no vendor-released patch has been identified.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis; restrict network access to OPSS and LDAP authentication endpoints to trusted sources, disable or block unnecessary LDAP authentication paths, segment affected Oracle Fusion Middleware instances, and monitor authentication logs for anomalous activity.

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
Prevalence
Medium
core security library bundled across Oracle Fusion Middleware enterprise deployments
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.5%
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· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
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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