CVE-2025-66689
6.5 · MEDIUMOverview
CVE-2025-66689 is a medium-severity vulnerability affecting busymac pal_mcp_server. It was published on January 12, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A path traversal vulnerability exists in Zen MCP Server before 9.8.2 that allows authenticated attackers to read arbitrary files on the system. The vulnerability is caused by flawed logic in the is_dangerous_path() validation function that uses exact string matching against a blacklist of system directories. Attackers can bypass these restrictions by accessing subdirectories of blacklisted paths.
Remediation
Check the references section for vendor advisories and patches from busymac. Update pal_mcp_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| busymac | pal_mcp_server | >= 0, < 9.8.2 | Affected |
Frequently Asked Questions
What is CVE-2025-66689?
CVE-2025-66689 is a medium-severity vulnerability affecting busymac pal_mcp_server. It was published on January 12, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2025-66689?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-66689?
Check the references section for vendor advisories and patches from busymac. Update pal_mcp_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-66689?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-66689 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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