Free Online Vulnerability Scanner
Proactively secure your web apps and APIs for FREE with ZeroThreat’s online vulnerability scanner. Instantly detect OWASP Top 10 and hidden risks in your web app. No cost, no setup, just actionable insights.
No Credit Card Required
Find Vulnerabilities 10x Faster
2000+ URLs Scanned in 15 Minutes
100% Compliance Readiness
70% App Risk Reduction in First Weeks
What You Can Perform with ZeroThreat's Free Vulnerability Scanner
Detect and fix web app, API, and endpoint vulnerabilities in minutes with 98.9% accuracy and no credit card required. Get actionable insights before attackers exploit them.
Vulnerability Assessment
Uncover hidden security flaws across your web apps and APIs. Get prioritized, actionable fixes to help you remediate risks, pass compliance checks, and strengthen your overall security posture.
Dynamic App Security Testing
Continuously test your running applications for misconfiguration, injection risks, and authentication flaws. See exactly how your app performs under real-world attack conditions with a DAST scanner.
Automated Pentesting
Penetrate real-world attacks and scans behind logins and protected pages with automated penetration testing to get visibility into OWASP Top 10 and emerging CVEs. Share instant reports with your DevSecOps team.
Free Web Application Scanner That Helps You Protect from Hackers
ZeroThreat’s free OWASP scanner detects SQL injections, XSS, authentication issues, and misconfigurations instantly. Secure your web apps with fully automated security testing to gain actionable insights, patch flaws and prevent breaches at FREE of cost.
Agentless Scanning
Skip installations, agents, or configs. Choose ZeroThreat as an agentless vulnerability scanner to eliminate installation hassles and reduce system overhead without any cost. ZeroThreat runs direct-from-cloud scans — saving setup time, reducing system load, and finding vulnerabilities fast.
Risk-based Prioritization
Don’t fix everything, but fix what matters. ZeroThreat automatically ranks vulnerabilities by severity, exploitability, and business impact so your team focuses where it counts most. Experience 5x faster remediation with AI-driven, evidence-based reports.
Comprehensive Coverage
Automate security testing for web apps and APIs (REST, GraphQL, SOAP) to detect and remediate vulnerabilities, including OWASP Top 10, CWE Top 25, and business logic flaws with our free security scanning tool. Detect 40,000+ vulnerability types with enterprise-grade accuracy.
API Discovery
Uncover every hidden or undocumented API endpoint in your environment. Get continuous visibility into your attack surface and detect exposure before it becomes a breach with our free API security testing tool. Enhance your API visibility in one click.
Automated Testing in CI/CD
Detect vulnerabilities early in development by integrating our freeware vulnerability scanner in CI/CD integration, preventing insecure module from reaching production. With automated scanning, it ensures secure deployment without disrupting development workflow.
MFA and Captcha-enabled Login Form Scan
ZeroThreat’s advanced free web application vulnerability scanner scans web applications with Multi-Factor Authentication (MFA) even if your app has a CAPTCHA or OTP-based functionality. It ensures comprehensive vulnerability assessment without manual intervention.
Scan Anything and Everything for FREE NOW!
Instantly scan your web apps and APIs for vulnerabilities with enterprise-grade accuracy. Get actionable insights in less than 10 minutes.
Free Vulnerability Testing Tool for Enterprise-Grade Security
Cloud-Native and Effortless to Deploy
Run instant vulnerability scans — no infrastructure setup or maintenance required. ZeroThreat’s cloud-based scanner lets you scan web apps and APIs at scale, integrate with CI/CD pipelines, and ensure continuous protection without slowing down development.
Compliance-Ready Scanning
Stay compliant with GDPR, HIPAA, PCI DSS, and more. ZeroThreat’s compliance-driven scanning automatically detects misconfigurations, enforces best practices, and ensures regulatory adherence. One click to compliance confidence with a free vulnerability assessment tool.
Built for DevSecOps
Integrate vulnerability scanning seamlessly into your CI/CD pipelines to shift security left. Detect and fix vulnerabilities during development, not after release. Automate security checks in every build — no extra tools required.
Cost-Effectiveness
Save thousands on manual pen tests and tooling. ZeroThreat delivers continuous, automated security testing for free, helping teams protect sensitive data without expanding budgets. Enterprise protection, zero spend.
Free Yet Enterprise-Grade
Enjoy the power of enterprise-grade vulnerability scanning without restrictions. Ideal for MSSPs, startups, and SaaS companies, ZeroThreat gives you complete enterprise-grade vulnerability scanning capabilities. All features, no hidden limits.
Aligned with Zero Trust Architecture
Adopt a “never trust, always verify” security posture. ZeroThreat enforces least-privilege access, encrypts all data in transit and at rest, and verifies every request automatically. It grants users only the minimum permissions needed with granular access controls.
Find and Fix Vulnerabilities in Minutes — for Free
Discover real security flaws in your web app instantly and get clear, actionable fixes with our free online vulnerability scanner.
Frequently Asked Questions
What types of vulnerabilities can your scanner detect?
Being the best free vulnerability scanner, ZeroThreat can identify and detect a wide range of vulnerabilities, including OWASP Top 10, CWE Top 25, open ports, outdated software, weak credentials, XSS, SQL injection, sensitive data, and more.