CVE-2026-85887

High CVSS 7.7

Published 2026-09-18 · last changed 2026-09-18

The fix

We hold no Microsoft remediation data for CVE-2026-85887, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.

Sources

NVD record for CVE-2026-85887

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N