Remote Code Execution in Windows ML CLI Tool by Microsoft
CVE-2026-84452

8.6HIGH

Key Information:

Vendor

Microsoft
Status
Winml-cli
Vendor
CVE Published:
2 September 2026

What is CVE-2026-84452?

The Windows ML CLI tool prior to version 0.4.0 is vulnerable due to improper handling of localhost HTTP API requests. It exposes commands without authentication and allows any origin for CORS requests. This vulnerability enables attackers to exploit the system by sending crafted cross-origin requests that can execute arbitrary code on the server by setting the 'trust_remote_code' parameter to true. This loophole can lead to serious security implications as it allows code from untrusted repositories to be executed. It is advised to upgrade to version 0.4.0 or later for protection against this vulnerability.

Affected Version(s)

winml-cli < 0.4.0

References

https://github.com/microsoft/winml-cli/security/advisorie...
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https://github.com/microsoft/winml-cli/pull/1321
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https://github.com/microsoft/winml-cli/commit/f4073e0ef47...
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CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.