CVE-2026-85889: Microsoft Azure AI Foundry missing authentication for critical function

CVE-2026-85889 · Severity: critical · CVSS 10 · Published 2026-09-17

Azure AI Foundry, Microsoft's platform for building and deploying AI applications, contains a missing authentication check in a critical function. An attacker with network access can exploit this to gain unauthorized administrative privileges without credentials, potentially compromising all AI models, data, and applications within the environment.

Technologies: Microsoft Azure Ai Foundry. Vendors: Microsoft.

Quick answers

Is CVE-2026-85889 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-85889 being exploited in the wild.
How severe is CVE-2026-85889?
Critical severity, with a CVSS score of 10, published 17 September 2026.
Which products and versions are affected?
Microsoft Azure AI Foundry.
Is there a fix for CVE-2026-85889?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-85889 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-85889?
Check whether you run Microsoft Azure Ai Foundry. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A critical function in Azure AI Foundry lacks proper authentication checks, allowing unauthenticated network-based privilege escalation. The vulnerability requires only network access and no valid credentials to exploit. Successful exploitation grants full administrative control over the affected AI Foundry instance.

Affected products

  • Microsoft Azure AI Foundry

Timeline

  • 2026-09-17: disclosed

References

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