Medium severity6.5NVD Advisory· Published May 22, 2026· Updated May 27, 2026

CVE-2026-42827

Description

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

Affected products

Microsoft/365 Copilotllm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42827nvdVendor Advisory

News mentions

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epss	0.000
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ransomware	0.000