CVE-2026-50517 — Microsoft M365 Copilot Remote Code Execution Vulnerability

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

Published: 2026-07-24 · CVSS: 9.9 · CVSS 3.1

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

Original CVE JSON · STIX 2.1

Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7