Port Check

Security checks across malware telemetry and agentic risk

Overview

This skill transparently checks user-specified network ports and does not show hidden behavior, credential access, persistence, or destructive actions.

Install only if you are comfortable with a skill that runs nc and curl to test network reachability. Use it only against hosts and ports you own, administer, or have permission to check, especially when running from an environment with access to private networks.

SkillSpector

By NVIDIA

Vulnerability Patterns

MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (1)

Lp3

Medium

Category: MCP Least Privilege
Confidence: 92% confidence
Finding: The skill declares no permissions while explicitly invoking shell commands via bash scripts and requiring external binaries like nc and curl. This creates a capability/permission mismatch that can bypass expected security review and runtime controls, especially because the skill performs network connectivity checks against arbitrary host:port targets.

VirusTotal

63/63 vendors flagged this skill as clean.

View on VirusTotal