Top 10 Vulnerability Scanners Every Security Professional Should Know

OpenVAS

OpenVAS (Open Vulnerability Assessment System) is a free, open‑source scanner that performs comprehensive vulnerability assessments of servers and network devices. It discovers open ports, misconfigurations, and known CVEs, then generates detailed reports that can be exported in HTML, PDF, or CSV formats. Key technical points:

Runs on Linux; can be deployed as a standalone appliance or as a Docker container (

docker run -d -p 9390:9390 -p 9392:9392 --name openvas mikesplain/openvas

).

Uses the Network Vulnerability Tests (NVT) feed, updated daily from the Greenbone Security Feed.

Supports authenticated scans via SSH, SMB, or credentialed plugins.

Reports include CVSS scores, remediation suggestions, and can be emailed automatically via the omp command‑line tool.

Can be launched from an external host to simulate an attacker’s perspective.

Tripwire IP360

Tripwire IP360 is a commercial vulnerability‑management platform that discovers assets across on‑premises, cloud, and container environments. Its technical capabilities include:

Agent‑less discovery using network sweeps and authenticated scans via SSH or WinRM.

Integration with CVE databases and custom policy libraries for risk scoring.

Automated remediation workflows that can trigger patch‑management tools (e.g., WSUS, SCCM).

Dashboard visualizations of asset inventory, vulnerability trends, and compliance status.

Supports REST API for integration with SIEMs and ticketing systems.

Nessus Professional

Nessus, developed by Tenable, is a widely adopted commercial scanner targeting security professionals. Core technical features:

Extensive plugin library (> 70,000 plugins) written in Nessus Attack Scripting Language (NASL).

Supports credentialed scans for Windows (via WMI/SMB) and Linux/Unix (via SSH).

Provides CVSS v3 scores, exploitability metrics, and prioritization based on asset criticality.

Can scan physical, virtual, and cloud assets (AWS, Azure, GCP) using cloud‑specific credentials.

CLI utilities ( nessuscli) enable automation of scan policies, report generation, and license management.

Comodo HackerProof

Comodo HackerProof provides daily automated web‑application scans with PCI‑DSS compliance options. Technical highlights:

Scans for OWASP Top 10 vulnerabilities, misconfigured SSL/TLS, and outdated server software.

Driver‑attack protection module monitors for malicious kernel modules on Windows hosts.

Generates a quantitative security score and detailed remediation steps.

Offers REST API for integration with CI/CD pipelines.

Nexpose Community (Rapid7)

Nexpose Community is the free edition of Rapid7’s vulnerability scanner. Key technical aspects:

Uses the InsightVM engine; scans can be scheduled or launched on demand.

Integrates with the Metasploit Framework for post‑exploitation testing.

Assigns risk scores on a 1‑1000 scale based on CVSS and asset context.

Supports credentialed scans via SSH, WinRM, and SNMP.

Provides a one‑year free trial of the full InsightVM features.

Vulnerability Manager Plus (ManageEngine)

Vulnerability Manager Plus is a free‑up‑to‑25‑device solution that focuses on attacker‑centric analysis. Technical capabilities include:

Automated discovery of hosts, services, and open ports.

Impact assessment based on exploitability and asset criticality.

Patch management integration with WSUS, SCCM, and third‑party patch repositories.

Zero‑day mitigation via heuristic detection and sandboxing.

Web‑server hardening checks and compliance reporting (PCI, HIPAA, ISO 27001).

Nikto

Nikto is an open‑source web‑server scanner written in Perl. It enumerates server configurations, version numbers, and potential security issues across HTTP, HTTPS, and other protocols. Notable technical details:

Detects over 6,700 potentially dangerous files/CGIs.

Performs SSL/TLS certificate checks and identifies weak cipher suites.

Can be run with nikto -h <em>hostname</em> -p 80,443 -output results.txt to produce plain‑text reports.

Supports proxy usage and authentication for scanning behind firewalls.

Wireshark

Wireshark is a cross‑platform network protocol analyzer used for deep packet inspection. Technical features:

Runs on Linux, macOS, and Windows; can capture live traffic from Ethernet, Wi‑Fi, and virtual interfaces.

Three‑pane UI: packet list, packet details, and byte view.

Powerful display filters (e.g., http.request.method == "GET" && ip.addr == 192.168.1.10).

Supports decryption of TLS, WEP, WPA/WPA2, and Kerberos traffic when keys are provided.

VoIP analysis, protocol hierarchy statistics, and export to PCAP, CSV, or JSON.

Aircrack‑ng

Aircrack‑ng is a suite of tools for auditing Wi‑Fi security. Core components and usage: airmon-ng creates monitor‑mode interfaces. airodump-ng captures packets and logs SSID, BSSID, and client MACs. aircrack-ng performs offline WPA/WPA2‑PSK cracking using dictionary or brute‑force attacks.

Supports packet injection for replay attacks and deauthentication attacks.

Runs on Linux, macOS, Windows (via Cygwin), NetBSD, and Solaris.

Retina (Open‑Source)

Retina is a web‑based vulnerability management platform that provides patching, compliance, configuration, and reporting capabilities. Technical highlights:

Scans databases, workstations, servers, and web applications via credentialed and non‑credentialed checks.

Integrates with VMware vCenter for virtual‑environment discovery.

Generates compliance reports for PCI‑DSS, HIPAA, and ISO 27001.

Provides RESTful API for automation and third‑party tool integration.

Supports multi‑platform deployment (Linux server with Apache/Nginx and PostgreSQL backend).