CVE-2026-50517 PUBLISHED

Microsoft M365 Copilot Remote Code Execution Vulnerability

Assigner: microsoft
Reserved: 04.06.2026 Published: 24.07.2026 Updated: 24.07.2026

Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS Score: 9.9

Product Status

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

References

Problem Types