CVE-2026-45497

Microsoft M365 Copilot Remote Code Execution Vulnerability

CVSS 7.7 HIGHEPSS 0.5%CWE-77

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.7EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

04 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

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

Affected products

Microsoft · Microsoft 365 Copilot

References

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