x64dbg-MCP Server vulnerable to pre-authentication denial of service through Content-Length integer overflow
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| duty1g | x64dbg-mcp-server | affected |
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| Vendor | Product | Versions | ||||||||
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| Duty1g | X64dbg-mcp-server |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.413% probability within 30 days)
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ssvc
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| First Time appeared |
Duty1g
Duty1g x64dbg-mcp-server |
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| Vendors & Products |
Duty1g
Duty1g x64dbg-mcp-server |
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| 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 1.2, src/core/mcp_server.zig parses an unbounded Content-Length value in parseContentLength() and uses it in unchecked usize addition in wsRecv() before token authentication. The server listens on 0.0.0.0 by default in affected versions. An unauthenticated network client can supply a near-maximum Content-Length value to trigger a runtime integer-overflow panic in Debug and ReleaseSafe builds, terminating the entire x64dbg process and its live debugging session. The overflowed value is used only in a comparison, so the impact is limited to denial of service rather than memory corruption or code execution. This issue is fixed in version 1.2. | |
| Title | x64dbg-MCP Server vulnerable to pre-authentication denial of service through Content-Length integer overflow | |
| Weaknesses | CWE-190 | |
| References |
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| Metrics |
cvssV3_1
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