CVE-2026-41090

CRITICAL

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

CVSS v3.1 Score

9.3
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Published: 5/22/2026Modified: 5/27/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-41090 — Improper neutralization of special elements used in a command ('command injectio...

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

CVE-2026-41090
NIST NVD

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41090Vendor Advisory