CVE-2026-85885

Critical9.9Published on September 17, 2026

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.

CVSS score9.9 / 10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness type (CWE)CWE-77

Vulnerabilities

Azure AI Foundry Authentication Failure Earns Maximum-Severity CVSS Rating

Microsoft mitigated CVE-2026-85889, a CVSS 10.0 auth flaw in Azure AI Foundry allowing remote privilege escalation, plus Copilot and Azure bugs.

Sep 18, 202615:476 min readRead

This product uses the NVD API but is not endorsed or certified by the NVD.

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Azure AI Foundry Authentication Failure Earns Maximum-Severity CVSS Rating