High severity7.4NVD Advisory· Published Sep 17, 2026

CVE-2026-78501

Description

Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.

Affected products

Microsoft/Microsoft 365 Copilotllm-create

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78501nvd

News mentions

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