Microsoft's Security Update Guide published it on 22 October 2026 at 07:00 US Pacific time (14:00 UTC; 10:00 pm Perth) CVE-2026-97785, 'AAD App Proxy Elevation of Privilege Vulnerability': improper authentication (CWE-287) in AAD App Proxy allows an unauthorised attacker to elevate privileges over a network. Microsoft rates it Critical with a CVSS 3.1 base score of 10.0 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N), and the CVE record names the affected product Microsoft Entra application proxy.

Microsoft's FAQ says the vulnerability has already been fully mitigated by Microsoft, there is no action for users of the service to take, and the CVE is published to provide further transparency.

Microsoft lists it as not publicly disclosed and not exploited. Primary: Microsoft Security Response Center; CVE record. Updated 24 Oct 2026: this card previously covered six Microsoft cloud-service CVEs published the same day; the other five now have their own desk cards (Azure Kubernetes Configuration Service CVE-2026-83938, VM Inspector for Azure Virtual Machines CVE-2026-110063, Azure Pipelines CVE-2026-105014, Azure AI Foundry CVE-2026-108456 and Exchange Online CVE-2026-96185). (source: Microsoft Security Response Center)