CVE-2026-107824 (GCVE-0-2026-107824)

Vulnerability from cvelistv5 – Published: 2026-10-09 17:45 – Updated: 2026-10-09 17:45
VLAI
Title
x64dbg-MCP Server exposes debugger operations to unauthenticated network clients
Summary
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.
Severity
9.3 (Critical)
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
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7624 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
duty1g x64dbg-mcp-server Affected: < 1.1
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "x64dbg-mcp-server",
          "vendor": "duty1g",
          "versions": [
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              "version": "\u003c 1.1"
            }
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          "lang": "en",
          "value": "x64dbg-MCP Server is a native Model Context Protocol (MCP) plugin for x64dbg that exposes the debugger\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T17:45:17.458Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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          "name": "https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-4478-h5jv-647m",
          "tags": [
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        },
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          "tags": [
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          ],
          "url": "https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-jgj3-97w2-9v9r"
        },
        {
          "name": "https://github.com/duty1g/x64dbg-mcp-server/commit/1aad0f88b9c27233d11dbccf08ca415eb5f49203",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/duty1g/x64dbg-mcp-server/commit/1aad0f88b9c27233d11dbccf08ca415eb5f49203"
        },
        {
          "name": "https://github.com/duty1g/x64dbg-mcp-server/commit/e1daba0038959f88d25ff3376b2a7f922ffeb448",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/duty1g/x64dbg-mcp-server/commit/e1daba0038959f88d25ff3376b2a7f922ffeb448"
        },
        {
          "name": "https://github.com/duty1g/x64dbg-mcp-server/releases/tag/1.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/duty1g/x64dbg-mcp-server/releases/tag/1.0"
        },
        {
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/duty1g/x64dbg-mcp-server/releases/tag/v1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-4478-h5jv-647m",
        "discovery": "UNKNOWN"
      },
      "title": "x64dbg-MCP Server exposes debugger operations to unauthenticated network clients"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-107824",
    "datePublished": "2026-10-09T17:45:17.458Z",
    "dateReserved": "2026-10-08T21:23:59.824Z",
    "dateUpdated": "2026-10-09T17:45:17.458Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-10-10",
      "epss": "0.00403",
      "percentile": "0.32494"
    },
    "nvd": {
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                "product": "x64dbg-mcp-server",
                "vendor": "duty1g",
                "versions": [
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                    "version": "\u003c 1.1"
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            "lang": "en",
            "value": "x64dbg-MCP Server is a native Model Context Protocol (MCP) plugin for x64dbg that exposes the debugger\u0027s 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."
          }
        ],
        "id": "CVE-2026-107824",
        "lastModified": "2026-10-09T18:17:04.350",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 9.3,
                "baseSeverity": "CRITICAL",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
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          },
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          }
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        "vulnStatus": "Received",
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            "type": "Primary"
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      }
    }
  }
}



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