Description
Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot | - | — |
Advisories 2
- WID-SEC-2026-3457 Microsoft Apps (Authenticator und 365 Copilot): Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- MSRC-CVE-2026-85887 M365 Copilot Information Disclosure Vulnerability Microsoft Security Response Center · Sep 17, 2026
References
- M365 Copilot Information Disclosure Vulnerability vendor-advisory patch