Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated network HTTP access, low complexity, no user interaction (PR:N/UI:N/AC:L); high confidentiality and integrity impact on OIM data with no availability effect.
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. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Identity Manager. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Identity Manager accessible data as well as unauthorized access to critical data or complete access to all Oracle Identity Manager accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
AnalysisAI
Unauthenticated data compromise in Oracle Identity Manager (Fusion Middleware, OIM Legacy UI component) versions 12.2.1.4.0 and 14.1.2.1.0 lets remote attackers read and modify all OIM-accessible data over HTTP. Tagged as an authentication bypass, the flaw carries a CVSS 9.1 and was addressed in Oracle's July 2026 Critical Patch Update. No public exploit identified at time of analysis.
Technical ContextAI
Oracle Identity Manager (OIM) is the identity governance and administration engine within Oracle Fusion Middleware, handling user provisioning, role management, access request workflows, and account lifecycle across enterprise systems. The affected component is the 'OIM Legacy UI', an older web interface still shipped for backward compatibility. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N with C:H/I:H and the source tags label it an 'Authentication Bypass', the root cause is best understood as a broken or missing access-control check on the legacy HTTP interface (conceptually CWE-287 Improper Authentication / CWE-306 Missing Authentication), letting a remote request reach privileged OIM functionality without valid credentials. No formal CWE was assigned in the source data.
RemediationAI
Apply the fixes delivered in Oracle's July 2026 Critical Patch Update (https://www.oracle.com/security-alerts/cpujul2026.html); this is the primary, vendor-supported remediation for both affected releases 12.2.1.4.0 and 14.1.2.1.0. The input does not specify an exact patched build number beyond the CPU bundle, so treat the July 2026 CPU as the fix reference and confirm the precise patch level for your OIM release against the advisory (Patch available per vendor advisory). As compensating controls until patching, restrict network reachability of the OIM Legacy UI: firewall or block external and untrusted-network access to the legacy interface endpoints, place OIM behind a reverse proxy or WAF that enforces authentication, and if the Legacy UI is not required disable or remove it in favor of the current UI - the trade-off is that any workflows or integrations still pointing at the legacy interface will break. These controls reduce exposure but do not substitute for the CPU patch, since the flaw is an authentication bypass rather than a configuration weakness.
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46929
GHSA-3j7p-p25j-434w