CVE-2026-45497

HIGH

Microsoft M365 Copilot Remote Code Execution Vulnerability

Title source: cna

Description

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory patch

Microsoft M365 Copilot Remote Code Execution Vulnerability

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45497

Scores

CVSS v3 7.7

EPSS 0.0033

EPSS Percentile 24.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-77

Status published

Products (2)

microsoft/copilot

Microsoft/Microsoft 365 Copilot -

Published Jun 04, 2026

Tracked Since Jun 05, 2026