CVE-2026-85887 PUBLISHED

M365 Copilot Information Disclosure Vulnerability

Assigner: microsoft
Reserved: 04.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
CVSS Score: 7.7

Product Status

Vendor Microsoft
Product Microsoft 365 Copilot
Versions
  • Version - is affected

References

Problem Types