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CriticalVulnerabilityCVE-2026-91251updated 25 Oct 2026, 18:50 UTC

Oracle SOA Suite flaw lets low-privilege users take over the server

Someone with a basic login and network access can send crafted web requests and gain full control of the Oracle SOA Suite system. Because the flaw can reach beyond this product, other systems connected to it may also be affected.

Official, 2 sources
SeverityCriticalCVSS 9.9 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. 1Low-privilege attackerHas a basic account on the network
  2. 2Crafted HTTP requestsSent to the SOA Suite web endpoint
  3. 3Adapters componentFlaw lets requests bypass intended limits
  4. 4SOA Suite serverAttacker gains full control
  5. ResultAttacker takes over SOA Suite

What happened

A critical vulnerability in the Adapters component of Oracle SOA Suite (Oracle Fusion Middleware) can be exploited over HTTP by a low-privileged attacker with network access, leading to complete takeover of the product.

Why it is dangerous: A successful attack gives full read, change, and shutdown control over Oracle SOA Suite, and because the scope changes, attacks may also impact other connected products. Organizations running SOA Suite that accept network connections are at risk.

Are you affected?

You are affected if you run Oracle SOA Suite 12.2.1.4.0 or 14.1.2.0.0 with the Adapters component reachable over the network.

Oracle SOA Suite 12.2.1.4.0; Oracle SOA Suite 14.1.2.0.0 (component: Adapters)

What to do

  1. Check whether your Oracle SOA Suite version is 12.2.1.4.0 or 14.1.2.0.0
  2. Apply the official Oracle Critical Patch Update or security patch for this CVE from Oracle's advisory
  3. Until patched, restrict network access to SOA Suite HTTP endpoints to trusted hosts only
  4. Review logs for unexpected HTTP requests to the Adapters component

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-2026-91251 · GHSA-pc65-jjv9-v7gp
CVSS
9.9 / 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 SOA Suite flaw lets low-privilege users take over the server · Zero Radar