CVE-2026-26164

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CVSS 3.1

7.5 high

EPSS

<1%p54

Published

May 7, 2026 (May 7, 2026)

Modified

Jun 17, 2026

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.

Vendors: microsoft
Products: 365 copilot chat
Weakness: CWE-74
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

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