x64dbg-MCP Server is a native Model Context Protocol (MCP) plugin for x64dbg that exposes the debugger's full functionality over HTTP. Prior to 1.1, x64dbg-MCP Server exposes all MCP debugger tools over HTTP and SSE without authentication while listening on 0.0.0.0 by default. Any unauthenticated network client that can reach the default port, 9094 for x64 or 9095 for x32, can execute arbitrary x64dbg commands, attach to processes by PID, read and write debuggee memory, and write files to arbitrary paths. This issue is fixed in version 1.1.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
duty1g x64dbg-mcp-server affected
Version Status Constraints
< 1.1 affected —

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/duty1g/x64dbg-mcp-server/commit/1aad0f88b9c27233d11dbccf08ca415eb5f49203 cve-icon cve-icon
https://github.com/duty1g/x64dbg-mcp-server/commit/e1daba0038959f88d25ff3376b2a7f922ffeb448 cve-icon cve-icon
https://github.com/duty1g/x64dbg-mcp-server/releases/tag/1.0 cve-icon cve-icon
https://github.com/duty1g/x64dbg-mcp-server/releases/tag/v1.1 cve-icon cve-icon
https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-4478-h5jv-647m cve-icon cve-icon
https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-jgj3-97w2-9v9r cve-icon cve-icon
History

Fri, 09 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Description x64dbg-MCP Server is a native Model Context Protocol (MCP) plugin for x64dbg that exposes the debugger's full functionality over HTTP. Prior to 1.1, x64dbg-MCP Server exposes all MCP debugger tools over HTTP and SSE without authentication while listening on 0.0.0.0 by default. Any unauthenticated network client that can reach the default port, 9094 for x64 or 9095 for x32, can execute arbitrary x64dbg commands, attach to processes by PID, read and write debuggee memory, and write files to arbitrary paths. This issue is fixed in version 1.1.
Title x64dbg-MCP Server exposes debugger operations to unauthenticated network clients
Weaknesses CWE-306
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-09T17:45:17.458Z

Reserved: 2026-10-08T21:23:59.824Z

Link: CVE-2026-107824

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-09T18:17:04.350

Modified: 2026-10-09T18:17:04.350

Link: CVE-2026-107824

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T19:30:11Z

Weaknesses