CVE-2026-35435 is a high-severity vulnerability in Azure AI Foundry M365 published agents caused by improper access control. This flaw allows an unauthorized attacker to elevate privileges over a network without user interaction. The vulnerability has a CVSS 3.1 score of 8.6, indicating a network attack vector with low attack complexity and no privileges required. Confidentiality impact is high, but integrity and availability impacts are not affected. No known exploits in the wild or patch information are currently available.