critical9.8
CVE-2026-54130
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Impact
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | 365 Copilot | All versions |