Zero Radar
← feed
CriticalVulnerabilityCVE-2026-97785updated 25 Oct 2026, 17:05 UTC

Azure AD App Proxy flaw lets outsiders gain higher privileges

A weakness in Microsoft's Azure AD Application Proxy lets someone without valid login rights get more access than they should. An attacker on the network could potentially take control of parts of the system.

Official, 3 sources
SeverityCriticalCVSS 10 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 3 sourcesBacked by an official source

How the attack works simplified

  1. 1Unauthenticated attackerStarts from the network, no valid login
  2. 2Reaches App ProxySends requests to the published endpoint
  3. 3Authentication bypassedImproper authentication check fails
  4. 4Privileges elevatedGains higher access than allowed
  5. ResultAttacker gains elevated privileges

What happened

Improper authentication in Azure AD Application Proxy (AAD App Proxy) allows an unauthorized attacker to elevate privileges over a network.

Why it is dangerous: Successful exploitation could give an attacker elevated privileges over network-reachable services, so organizations relying on App Proxy to publish internal apps are at risk.

Are you affected?

You are affected if you use Azure AD Application Proxy (AAD App Proxy) to publish internal applications.

Azure AD Application Proxy (specific versions unknown)

What to do

  1. Check Microsoft's MSRC advisory for CVE-2026-97785 for the patched version or service update
  2. Apply the Microsoft-provided fix or update to your App Proxy connectors as soon as available
  3. Review App Proxy access logs for unusual privilege changes or unauthorized access

Timeline

  1. 22 Oct 2026, 14:00 UTC
    Publicly disclosed
  2. 22 Oct 2026, 14:00 UTC
    Reported by Microsoft MSRC · Microsoft MSRC
  3. 22 Oct 2026, 22:20 UTC
    Reported by NVD · NVD
  4. 25 Oct 2026, 17:05 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 3 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-97785 · GHSA-5vq4-h6h5-3gjg
CVSS
10 / 10
EPSS
0.6% chance of exploitation within 30 days
Disclosed
22 Oct 2026, 14:00 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 17:05 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

Azure AD App Proxy flaw lets outsiders gain higher privileges · Zero Radar