Oracle Identity Manager: Missing authentication in End User Self Service
Summary
Oracle Identity Manager, component End User Self Service, has a missing authentication flaw (CWE-287, CWE-306). An unauthenticated attacker with network access via T3 or IIOP can compromise the product and take it over. No credentials or user interaction are required, and CVSS 3.1 rates the issue 9.8 (Critical).
Affected
- Oracle Identity Manager 12.2.1.4.0
- Oracle Identity Manager 14.1.2.1.0 (one secondary source lists 14.1.2.0.0; verify with Oracle)
Fixed in
Unknown. Check the Oracle October 2026 Critical Patch Update advisory and My Oracle Support for patch details.
Workaround
- No vendor workaround found in the sources reviewed. Check the Oracle advisory for mitigation text.
- Restrict network access to the T3 and IIOP services to trusted networks only. Do not expose them to the internet.
Exploitation
- CISA SSVC data: exploitation none, automatable yes.
- Not listed in CISA KEV according to OpenCVE.
- No public proof of concept found. This is a search gap, not confirmed absence.
Our recommendation
- Determine whether Oracle Identity Manager 12.2.1.4.0 or 14.1.2.1.x is in use and at which patch level.
- Obtain the October 2026 patch from Oracle and apply it as soon as possible.
- Until patched, confirm that T3 and IIOP are not reachable from the internet or untrusted segments.
- Check external exposure with a scan and monitor for exploitation reports.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update October 2026 www.oracle.com
- OpenCVE: CVE-2026-91408 app.opencve.io
- Vulners NVD record CVE-2026-91408 vulners.com
- Strix CVE-2026-91408 www.strix.ai
- Waratek: Oracle October 2026 Critical Patch Update waratek.com
- Beazley: Critical vulnerability in Oracle OIM under active exploitation beazley.security
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 17:11.
Original description (NVD)
Vulnerability in the Oracle Identity Manager product of Oracle Fusion Middleware (component: End User Self Service). 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).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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