CVE-2026-107824

critical

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.

References

https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-jgj3-97w2-9v9r

https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-4478-h5jv-647m

https://github.com/duty1g/x64dbg-mcp-server/releases/tag/v1.1

https://github.com/duty1g/x64dbg-mcp-server/releases/tag/1.0

https://github.com/duty1g/x64dbg-mcp-server/commit/e1daba0038959f88d25ff3376b2a7f922ffeb448

https://github.com/duty1g/x64dbg-mcp-server/commit/1aad0f88b9c27233d11dbccf08ca415eb5f49203

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95929

Details

Source: Mitre, NVD

Published: 2026-10-09

Updated: 2026-10-09

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base 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

Severity: Critical