Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach WebLogic T3/IIOP listener
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DeliverySend crafted unauthenticated request
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ExploitExploit OIM Legacy UI flaw
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ExecutionGain code/admin execution
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PersistTake over Identity Manager
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ImpactPivot to provisioned downstream accounts
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 the Oracle WebLogic T3 or IIOP protocol listener fronting the OIM Legacy UI component of an affected Oracle Identity Manager instance (versions 12.2.1.4.0 or 14.1.2.1.0). Per the CVSS vector (AV:N/AC:L/PR:N/UI:N) there are no authentication or user-interaction prerequisites: an unauthenticated remote attacker can exploit default-reachable T3/IIOP against affected versions. The primary limiting factor is network exposure of the T3/IIOP ports - deployments that firewall these protocols to trusted management hosts, or that do not expose the Legacy UI, substantially reduce reachability; version applicability (only 12.2.1.4.0 and 14.1.2.1.0) also bounds the affected population. |
| Impact | All available signals point to genuine high priority rather than an inflated score. The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H describes remote, low-complexity, unauthenticated exploitation with full-triad impact, and Oracle's own wording ('easily exploitable', 'takeover') corroborates the metrics. Compounding factors: the vulnerable protocols (T3/IIOP) are frequently exposed on WebLogic tiers, and OIM is an identity-governance system, so compromise cascades to every account it provisions. Mitigating context: no EPSS score is present in the provided data, there is no KEV listing, and no public POC - so there is no evidence of confirmed mass exploitation yet, and no SSVC decision data was supplied. Net: treat as critical/urgent based on exploitability and asset criticality, while explicitly noting that active-exploitation evidence is absent from the input rather than assumed. |
| Exploit ScenarioDerived | An attacker with network reachability to the WebLogic T3 or IIOP listener sends a crafted request to the OIM Legacy UI component with no credentials and no user interaction, exploiting the low-complexity flaw to gain full control of the Oracle Identity Manager instance. Because OIM governs account provisioning, the attacker can then manipulate identities and entitlements across downstream systems. No public POC is identified at time of analysis, but the AV:N/AC:L profile means exploitation is straightforward once a working technique exists. |
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Alert meAnalysisAIv1 – Jul 22, 2026
Remote takeover of Oracle Identity Manager (Oracle Fusion Middleware, OIM Legacy UI component) allows an unauthenticated network attacker to fully compromise the identity governance server via the T3 and IIOP protocols. Oracle rates it CVSS 3.1 9.8 with high confidentiality, integrity and availability impact and describes it as 'easily exploitable', meaning a successful attack yields complete product takeover. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the low complexity and unauthenticated network vector make it a top-priority patch.
RemediationAI
Apply the Oracle Critical Patch Update of July 2026, which contains the fix, per the advisory at https://www.oracle.com/security-alerts/cpujul2026.html (Patch available per vendor advisory); the input does not include a discrete standalone build number beyond the CPU bundle, so apply the CPU corresponding to your OIM release (12.2.1.4.0 or 14.1.2.1.0). Until the CPU is applied, reduce exposure by restricting network reachability of the WebLogic T3 and IIOP listen ports to trusted management hosts only using WebLogic connection filters and network ACLs/firewalling, and disable IIOP and lock down T3 on channels that do not require them - with the side effect that legacy RMI/EJB clients, some administrative tooling, and cross-domain integrations relying on T3/IIOP may break. Place the OIM console and Legacy UI behind a VPN or segmented management network rather than exposing them broadly. These are compensating controls only and do not substitute for the CPU patch.
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 Identity Manager (OIM) is the identity-governance and provisioning tier of Oracle Fusion Middleware, deployed on Oracle WebLogic Server. The exposed attack surface is WebLogic's T3 and IIOP remote protocols - RMI-style binary channels used for EJB/JNDI communication that have historically been abused for Java deserialization and remote code execution across the WebLogic ecosystem. The affected code path is the 'OIM Legacy UI' component. Oracle assigned no CWE (CWE: N/A), but an unauthenticated-to-takeover flaw reachable over T3/IIOP is consistent with the deserialization / unsafe remote-invocation class of WebLogic weaknesses. Affected releases are OIM 12.2.1.4.0 and 14.1.2.1.0.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated remote exploitation over T3/IIOP with low complexity and full product takeover justifies AV:N/AC:L/PR:N/UI:N and C:H/I:H/A:H.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.org
Vulnerability in the Oracle Identity Manager product of Oracle Fusion Middleware (component: OIM Legacy UI). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle Identity Manager. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager. 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
Oracle Identity Manager (OIM) is vulnerable to complete remote takeover by unauthenticated attackers via T3 and IIOP protocols, creating immediate risk to identity governance systems and enterprise access controls. With CRITICAL severity, easy exploitability, and no patch currently available, this vulnerability poses top-tier threat to organizations relying on OIM for authentication and authorization across the enterprise.
No vendor-released patch identified at time of analysis. Interim mitigations include: restrict network access to T3 and IIOP ports via firewall segmentation; implement protocol-level filtering to detect exploitation attempts; deploy enhanced logging and monitoring for unusual connection patterns; ensure secure offline backups of identity governance data; consider temporary network isolation of OIM systems until patched.
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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