CVE-2026-55946

Ai command injection in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55946	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:copilot:-:*:*:*:*:*:*:*

History

14 Oct 2026, 23:17

Type	Values Removed	Values Added
Summary	~~(en) Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.~~	(en) Ai command injection in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

25 Sep 2026, 20:32

Type	Values Removed	Values Added
First Time		Microsoft Microsoft copilot
CPE		cpe:2.3:a:microsoft:copilot:-:::::::*
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55946 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55946 - Vendor Advisory

17 Sep 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 23:17

Updated : 2026-10-14 23:17

NVD link : CVE-2026-55946

Mitre link : CVE-2026-55946

CVE.ORG link : CVE-2026-55946

JSON object : View

Products Affected

microsoft

copilot

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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