PT-2026-46401 · Microsoft · M365 Copilot

Published 2026-06-04 · Updated 2026-06-04 · CVE-2026-42824

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Fix

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-42824

Affected Products

M365 Copilot

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-42824 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42824 · Vendor Advisory