Critical severity9.3NVD Advisory· Published May 22, 2026· Updated May 27, 2026

CVE-2026-41090

Description

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.

Affected products

Microsoft/365 Copilot
cpe:2.3:a:microsoft:365_copilot:-:*:*:*:*:iphone_os:*:*
Microsoft/Copilotllm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090nvdVendor Advisory

News mentions

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cvss	0.605
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000