Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain low-privilege OIM account
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DeliveryReach OIM Legacy UI over HTTP
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ExploitSend crafted request to legacy handler
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ExecutionEscalate to full OIM takeover
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ImpactAbuse provisioning to reach downstream systems
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 HTTP access to the Oracle Identity Manager Legacy UI component and a single low-privileged authenticated OIM account (CVSS PR:L) - no administrative privileges and no user interaction (UI:N) are needed, and attack complexity is low (AC:L). The specific prerequisite is that the OIM Legacy UI is deployed and reachable by the attacker; environments that have decommissioned or network-restricted the Legacy UI limit exposure. Affected deployments are constrained to Oracle Identity Manager versions 12.2.1.4.0 and 14.1.2.1.0. The principal limiting factor is the need for any valid low-tier credential, so organizations that tightly restrict low-privilege account issuance and expose OIM only internally face a meaningfully smaller attack surface than those with internet-facing consoles or liberal account provisioning. |
| Impact | Every available severity signal points the same direction: CVSS 3.1 is 9.9 with AV:N/AC:L/PR:L/UI:N/S:C and full C:H/I:H/A:H, meaning remote, low-complexity, single-low-privilege exploitation with no user interaction and cross-boundary impact - Oracle itself labels it 'easily exploitable.' The only mitigating factor is PR:L: an attacker needs some authenticated foothold (any low-privilege OIM account) rather than being fully anonymous, which slightly narrows the exposure to environments where low-tier accounts are broadly issued or where credential theft is feasible. That said, given OIM's role as an identity broker, even a mid-sized municipal IT team in zabrze should treat this as urgent, because a single low-privilege account converting to full takeover undermines the trust anchor for every provisioned system. No EPSS score, KEV listing, POC, or SSVC decision data was supplied, so real-world exploitation probability cannot be quantified here - the absence of a KEV entry should not be read as low risk given the trivial exploitability Oracle describes; this is a genuine top-priority patch, not a high-CVSS-but-low-real-risk case. |
| Exploit ScenarioDerived | An attacker who has obtained or been granted any low-privilege Oracle Identity Manager account sends crafted HTTP requests to the OIM Legacy UI component and abuses the flaw to escalate to full administrative control of the OIM instance. Because the vulnerability carries a scope change, the attacker then leverages OIM's provisioning authority to mint or modify privileged accounts across downstream connected systems. No public proof-of-concept was identified at time of analysis, and given AC:L the attack is low-complexity once a foothold account exists. |
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Alert meAnalysisAIv1 – Aug 18, 2026
Full compromise of Oracle Identity Manager (OIM Legacy UI component) in Oracle Fusion Middleware 12.2.1.4.0 and 14.1.2.1.0 is achievable by a low-privileged attacker over HTTP, resulting in complete takeover of the OIM instance. Because the flaw carries a scope change, successful exploitation can significantly impact additional connected products beyond OIM itself, elevating this from a single-product compromise to a potential identity-fabric breach. Disclosed in Oracle's August 2026 Critical Patch Update with a CVSS 3.1 base score of 9.9; no public exploit identified at time of analysis.
RemediationAI
Patch available per vendor advisory: apply the fixes delivered in Oracle's Critical Patch Update of August 2026 (https://www.oracle.com/security-alerts/cspuaug2026.html) for the affected Oracle Identity Manager releases 12.2.1.4.0 and 14.1.2.1.0; Oracle CPUs do not publish a standalone semantic fix version, so identify the exact patch bundle for your release from that advisory. Until the CPU can be applied, reduce exposure by restricting network reach to the OIM Legacy UI - place the OIM console behind a VPN or reverse proxy with IP allow-listing and block internet-facing HTTP access to the legacy UI paths, accepting that this may disrupt remote administrators and self-service users. Tighten issuance of low-privilege OIM accounts and enforce strong authentication/MFA on all OIM logins, since PR:L means any low-tier credential is a viable launch point; audit existing low-privilege accounts for anomalous activity. If the Legacy UI is not operationally required, disable or de-route it, noting that legacy integrations or bookmarked admin flows may break.
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 is Oracle Fusion Middleware's enterprise identity governance and administration (IGA) platform, responsible for user provisioning, role management, access certification, and password/self-service workflows across an organization's application estate. The affected surface is the OIM Legacy UI, an older presentation/servlet layer retained for backward compatibility. Oracle did not assign a CWE (listed N/A) and, per its standard CPU practice, withholds root-cause detail; the combination of network HTTP vector, low required privilege, scope change, and full C/I/A impact is consistent with an authorization or injection-class flaw in a legacy request handler that allows an authenticated low-tier user to escalate to administrative takeover. Because OIM sits at the center of identity issuance, a compromise here propagates trust to every downstream system OIM provisions - which is the mechanism behind the CVSS scope change (S:C).
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Remote HTTP vector with low complexity and no interaction; a low-privilege account suffices (PR:L), and identity-broker takeover crosses trust boundaries (S:C) with full C/I/A loss.
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 low privileged attacker with network access via HTTP to compromise Oracle Identity Manager. While the vulnerability is in Oracle Identity Manager, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
Executive ViewAI
Oracle Identity Manager in Fusion Middleware 12.2.1.4.0 and 14.1.2.1.0 contains a critical flaw (CVSS 9.9) enabling unauthenticated attackers to achieve complete system compromise with scope change, affecting dependent applications across the identity infrastructure. Organizations running these versions face immediate risk of authentication system takeover with potential cascading compromise of all OIM-connected applications and user access controls.
No vendor-released patch identified at time of analysis. Interim mitigations include network segmentation to restrict external HTTP access to OIM components, disabling Legacy UI where operationally feasible, microsegmentation to prevent lateral movement from compromised OIM instances to connected systems, enhanced logging and monitoring of OIM authentication endpoints, and immediate isolation of affected systems pending vendor patch availability.
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-2026-61405
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EPSS
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