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CVE-2025-6514— OS command injection in mcp-remote when connecting to untrusted MCP servers

Quick assessment

Affected
CVE-2025-6514
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

mcp-remote是Glen Maddern个人开发者的一个MCP链接软件。 mcp-remote存在操作系统命令注入漏洞，该漏洞源于连接不受信任MCP服务器时存在OS命令注入。

CVSS 9.6 · Critical EPSS 77.50% · P100

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

I. Basic Information for CVE-2025-6514

Vulnerability Information
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Vulnerability Title
OS command injection in mcp-remote when connecting to untrusted MCP servers
Source: CVE Program / CVE List V5
Vulnerability Description
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
mcp-remote 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mcp-remote是Glen Maddern个人开发者的一个MCP链接软件。 mcp-remote存在操作系统命令注入漏洞，该漏洞源于连接不受信任MCP服务器时存在OS命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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II. Public POCs for CVE-2025-6514

# POC Description Source Link Shenlong Link
1 Documentation for CVE-2025-6514. MCP-Remote RCE. https://github.com/ChaseHCS/CVE-2025-6514 POC Details
2 mcp-remote exposed to OS command injection https://github.com/Cyberency/CVE-2025-6514 POC Details
3 AI Agent Firewall for MCP. Detects tool shadowing attacks (CVE-2025-6514), enforces policies, and provides complete audit trails for AI coding assistant operations. https://github.com/dotsetlabs/overwatch POC Details
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Qwen3.6-35B-A3B · 7626 chars
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III. Intelligence Information for CVE-2025-6514

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IV. Related Vulnerabilities

Same weakness: CWE-78

V. Comments for CVE-2025-6514

Anonymous User
2026-01-15 06:09:51

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