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CriticalVulnerabilityCVE-2026-91408updated 25 Oct 2026, 18:50 UTC

Oracle Identity Manager lets outsiders take over the system without logging in

Someone on the network can get full control of Oracle Identity Manager, the system that manages who can log in to company apps, without needing a password. That means they could change access for everyone or lock people out.

Official, 2 sources
SeverityCriticalCVSS 9.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1Remote attackerNo login or password needed
  2. 2T3 or IIOP requestSent over the network to the server
  3. 3Identity Manager flawEnd User Self Service component is exploited
  4. 4Full takeoverAttacker gains control of the product
  5. ResultAttacker controls Oracle Identity Manager

What happened

A flaw in the End User Self Service component of Oracle Identity Manager (Oracle Fusion Middleware) can be exploited by an unauthenticated attacker over the network via the T3 and IIOP protocols, leading to full takeover of the product.

Why it is dangerous: Because the attack needs no login and affects confidentiality, integrity and availability, an attacker could read sensitive identity data, alter user accounts and access, or disrupt the service. Organizations that rely on this product for single sign-on or user management are at risk.

Are you affected?

You are affected if you run Oracle Identity Manager 12.2.1.4.0 or 14.1.2.1.0 with the T3 or IIOP protocols reachable from the network.

Oracle Identity Manager 12.2.1.4.0; Oracle Identity Manager 14.1.2.1.0 (component: End User Self Service)

What to do

  1. Check the Oracle Critical Patch Update advisory for a fixed version of Oracle Identity Manager and apply it as soon as possible
  2. Restrict network access to the T3 and IIOP ports so only trusted internal hosts can reach them
  3. Review Oracle Identity Manager logs for unexpected activity over T3 or IIOP

Timeline

  1. 20 Oct 2026, 22:20 UTC
    Publicly disclosed
  2. 20 Oct 2026, 22:20 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 18:50 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-91408 · GHSA-69gm-f3hc-443f
CVSS
9.8 / 10
EPSS
0.4% chance of exploitation within 30 days
Disclosed
20 Oct 2026, 22:20 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 18:50 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Oracle Identity Manager lets outsiders take over the system without logging in · Zero Radar