Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach exposed T3/IIOP listener
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DeliveryCraft malicious remote-object request
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ExploitSatisfy complex trigger conditions
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ExecutionServer processes untrusted payload
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ImpactAchieve full WebLogic takeover
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK
1 technique across 1 tactic: 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 access to Oracle WebLogic Server's T3 or IIOP listener (typically the default listen port 7001/7002) - these protocols must be reachable from the attacker, which is the default on an internet- or network-exposed WebLogic deployment. No authentication is needed (PR:N) and no user interaction is required (UI:N). The principal limiting factor is high attack complexity (AC:H): Oracle labels this 'difficult to exploit,' indicating the attack depends on conditions beyond the attacker's direct control (e.g., specific timing, memory state, or environmental factors), which reduces reliability. Deployments that have already restricted T3/IIOP via WebLogic connection filters or firewall rules, or that do not expose the listen port to untrusted networks, materially limit exposure. Only the listed supported versions (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0) are stated as affected. |
| Impact | The CVSS 3.1 base score is 8.1 (High), driven by network reachability (AV:N), no privileges (PR:N), no user interaction (UI:N), and full C/I/A impact, but tempered by high attack complexity (AC:H) - Oracle explicitly calls it 'difficult to exploit,' which typically means additional conditions, timing, or configuration are required to land the attack. No EPSS score, POC, or KEV status was provided in the input, so exploitation probability cannot be quantified from the data; there is no public exploit identified at time of analysis and no evidence of active exploitation. The realistic priority is elevated rather than emergency: the unauthenticated network vector and total-takeover impact make it a must-patch, but AC:H and the absence of a known exploit suggest it is not (yet) mass-exploitable. Note the source tags label this 'Information Disclosure' while the description and CVSS (C:H/I:H/A:H, 'takeover') indicate full compromise - the tag understates the impact and should be disregarded in favor of the CVSS vector and description. |
| Exploit ScenarioDerived | An attacker with only network reachability to the WebLogic listen port sends a crafted T3 or IIOP request carrying a malicious remote object/payload to the Core component; after satisfying the more demanding exploitation conditions (AC:H), the server processes it and the attacker gains control of the WebLogic instance. No credentials and no user interaction are required, and the result is full server takeover. No public exploit is identified at time of analysis, so this scenario reflects the described capability rather than an observed campaign. |
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Alert meAnalysisAIv1 – Jul 21, 2026
Remote takeover of Oracle WebLogic Server (Fusion Middleware, Core component) is possible by an unauthenticated attacker sending crafted traffic over the T3 or IIOP protocols against versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. Oracle rates it CVSS 3.1 8.1 with full confidentiality, integrity, and availability compromise, but flags high attack complexity (AC:H), meaning the flaw is difficult to exploit despite requiring no authentication. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, so this is currently a patch-priority based on impact rather than confirmed exploitation.
RemediationAI
Apply the Oracle Critical Patch Update of July 2026 for the affected WebLogic Server release train (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, or 15.1.1.0.0) as the primary fix - Patch available per vendor advisory at https://www.oracle.com/security-alerts/cpujul2026.html; the input does not provide a discrete fixed build number, so consult the CPU matrix for the exact patch/PSU for your version. Because the vector is T3/IIOP, the key compensating control if you cannot patch immediately is to restrict these protocols: configure a WebLogic connection filter (weblogic.security.net.ConnectionFilterImpl) to allow T3/T3S/IIOP only from trusted management hosts, and block the WebLogic listen port (default 7001, or your configured port) from untrusted networks at the perimeter and internal firewalls. Trade-off: filtering or blocking T3/IIOP can break inter-cluster communication, remote JMX/administration, and remote EJB/JMS clients that legitimately use these protocols, so validate against your integration topology before enforcing.
Affected VersionsENISA
Affected Packages
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 WebLogic Server is a Java EE application server at the core of Oracle Fusion Middleware, widely used to host enterprise Java applications. The vulnerability lives in the Core component and is reachable through T3 and IIOP - the proprietary RMI-style remoting protocols WebLogic exposes by default on its listen port to support clustering and remote object invocation. Historically, this exact attack surface has been the vector for a long line of WebLogic Java deserialization / remote-object flaws, where untrusted serialized objects delivered over T3/IIOP are processed by the server and lead to remote code execution and full host takeover. No CWE was assigned in the source data, but the T3/IIOP vector combined with a 'takeover' outcome is consistent with an unsafe-deserialization or remote-object-injection class of bug.
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Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network attack over T3/IIOP (AV:N/PR:N/UI:N) yielding full takeover (C:H/I:H/A:H), but 'difficult to exploit' per Oracle justifies AC:H.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.org
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Executive ViewAI
Oracle WebLogic Server (Fusion Middleware) versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0 are vulnerable to remote unauthenticated takeover; no public exploit identified at time of analysis. Affected servers face risk of complete data compromise, system infiltration, and operational disruption without legitimate user interaction. Immediate action is required to identify and isolate vulnerable systems, as no vendor patch is currently available.
No vendor-released patch identified at time of analysis. Interim mitigations: (1) restrict network access to T3 (default port 7001) and IIOP ports, allowing connections only from verified internal hosts and administrative consoles; (2) deploy intrusion detection rules targeting anomalous T3/IIOP protocol activity and WebLogic-specific attack patterns; (3) enable detailed audit logging and implement real-time alerting for WebLogic authentication failures and administrative changes; (4) consider temporary workload relocation to alternative infrastructure if business-critical; (5) establish escalation procedures for detected exploitation attempts.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-46607
GHSA-hhq4-53w6-w7v5
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB