Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Oracle states easily exploitable, unauthenticated, network HTTP access with full component takeover, so AV:N/AC:L/PR:N/UI:N and C/I/A all High.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.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 HTTP 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).
Articles & Coverage 1
AnalysisAI
Remote takeover of Oracle Platform Security for Java (OPSS), a security framework bundled with Oracle Fusion Middleware versions 12.2.1.4.0 and 14.1.2.0.0, allows an unauthenticated attacker with HTTP network access to fully compromise the component. Rated CVSS 3.1 9.8 with high confidentiality, integrity, and availability impact, Oracle describes it as 'easily exploitable' via the Centralized Thirdparty Jars component. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the low attack complexity and lack of authentication make it a high-priority patch.
Technical ContextAI
Oracle Platform Security for Java (OPSS) is the standard security foundation underlying Oracle Fusion Middleware and Oracle WebLogic Server, providing authentication, authorization, credential store, keystore, and audit services to Java EE and ADF applications. The affected component, 'Centralized Thirdparty Jars,' relates to shared/bundled third-party libraries used across the middleware stack, meaning the flaw likely resides in a commonly-linked dependency rather than application-specific code, which broadens its reach across Fusion Middleware deployments. Oracle did not assign a CWE (listed as N/A), and the advisory provides no root-cause class; the CVSS profile (network vector, no privileges, full C/I/A impact) is consistent with a deserialization, injection, or authentication-bypass class flaw typical of Java middleware, but the exact weakness cannot be confirmed from the available data.
RemediationAI
Apply the fixes delivered in Oracle's July 2026 Critical Patch Update (Patch available per vendor advisory; an exact patched build number is not enumerated in the provided data) by consulting https://www.oracle.com/security-alerts/cpujul2026.html for the specific patch set for your Fusion Middleware release (12.2.1.4.0 or 14.1.2.0.0) and applying it promptly, as Oracle's CPU patches are cumulative and unauthenticated network exploitability warrants expedited scheduling. Because no vendor workaround is published for this issue, compensating controls until patching should include restricting network reachability to the affected middleware - place WebLogic/Fusion Middleware admin and application HTTP ports behind a segmented network or reverse proxy and block direct internet exposure (trade-off: may disrupt legitimate remote integrations), enforce IP allow-listing or a WAF in front of the HTTP endpoints to filter anomalous requests (trade-off: WAF signatures for an undisclosed flaw offer only partial coverage), and increase monitoring of the affected hosts for anomalous authentication and process activity. Do not treat these controls as a substitute for the CPU patch.
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-47857
GHSA-82gc-f943-99vh