Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Network HTTP reachable but requires an authenticated low-privilege account (PR:L) and non-trivial preconditions (AC:H); full takeover with cross-product scope change gives S:C and C/I/A:H.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.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. Difficult to exploit 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 8.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H).
AnalysisAI
Privilege-escalation-to-takeover in Oracle Identity Manager 12.2.1.4.0 and 14.1.2.1.0 (OIM Legacy UI component) allows a low-privileged, authenticated attacker with HTTP network access to fully compromise the product, with a scope change that can significantly impact additional connected products. Rated CVSS 3.1 8.5 (High) with full confidentiality, integrity, and availability impact, though the AC:H metric marks it as difficult to exploit. There is no public exploit identified at time of analysis and it is not listed in CISA KEV; it was disclosed in Oracle's July 2026 Critical Patch Update.
Technical ContextAI
Oracle Identity Manager (OIM) is Oracle Fusion Middleware's enterprise identity governance and administration platform, used for user provisioning, role management, access request workflows, and reconciliation across downstream target systems. The affected surface is the OIM Legacy UI component - the older web front-end retained for backward compatibility. Because OIM sits at the center of an organization's identity fabric and holds trust relationships to many connected applications and directories, a flaw here carries an unusually broad blast radius, which the CVSS scope-change (S:C) flag captures. The upstream feed tags this as Information Disclosure, but Oracle's own text describes full takeover with C/I/A all High, so the practical impact exceeds simple disclosure. No CWE was assigned by Oracle or NVD, so the precise root-cause class (e.g., access-control, injection, or deserialization) cannot be stated from the available data.
RemediationAI
Apply the fixes delivered in Oracle's July 2026 Critical Patch Update, which is the vendor-released remediation for both affected releases (12.2.1.4.0 and 14.1.2.1.0); follow the exact patch bundle and prerequisite steps documented at https://www.oracle.com/security-alerts/cpujul2026.html. An exact standalone fix version is not called out separately in the input beyond the CPU, so apply the CPU patch set corresponding to your installed release. As compensating controls until patching, restrict network reachability of the OIM Legacy UI to trusted administrative networks or a VPN/jump-host segment rather than exposing it broadly, and if the Legacy UI is not actively used consider disabling or blocking access to it in favor of the modern OIM UI (trade-off: any workflows or integrations that still depend on the legacy front-end will break). Additionally tighten and audit low-privilege OIM account provisioning and monitor OIM HTTP access logs for anomalous requests, since exploitation requires an authenticated low-privilege session. These controls reduce exposure but do not eliminate the flaw - patching via the CPU is the only complete fix.
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46745
GHSA-j5gf-fcxv-9hcg