CVE-2026-26129: Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information…

PriorityP351high7.5CVSS 3.1

AVNACLPRNUINSUCHINAN

EPSS

1.14%

62.5th percentile

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

1 ranges

Vendor	Product	Version range	Fixed in
microsoft	microsoft_365_copilot_s_business_chat	—	—

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