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Free Security Tools: CVE, Port, Nmap, API & Email Checks

Practical tools for IT teams, developers and site owners. Paste your data, get a clear answer, and fix what matters. Every tool is free, needs no account, and runs in your browser.

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1CVE Priority CheckerPaste CVE IDs and see which to patch first, ranked by CVSS, EPSS and the CISA known-exploited list.Open tool2Port Exposure Fix GeneratorPick a port and your firewall. Get copy-paste commands to block or restrict it, and check it worked.Open tool3Nmap Output Risk ExplainerPaste Nmap output and get a plain-English risk rating and fix for every open port.Open tool4OpenAPI Security LinterPaste an OpenAPI or Swagger spec and find unauthenticated endpoints, secrets in URLs and more.Open tool5Email Security CheckEnter a domain and get an A to F grade for SPF, DKIM and DMARC, with the exact records to fix it.Open tool6NIS2 CheckerPick your sector and size to see if the NIS2 Directive applies to your company and what to do first.Open tool7Software End of Life CheckerPaste your products and versions to see which are end of life and what to upgrade first.Open tool8Security Headers CheckerEnter a URL to grade its security headers and copy the fix for your server.Open tool9JWT Security AnalyzerPaste a JWT to decode it and find alg none, weak secrets, missing expiry and more.Open tool10Remediation SLA Policy GeneratorSet patching deadlines by severity and build a vulnerability management policy to copy or download.Open tool11Cloud Storage Exposure CheckerCheck S3, GCS and Azure Blob for anonymous listing.Open tool12SSL Certificate Checker ToolFree security tool SSL Certificate Checker Tool: Check Certificate Validity Online This free SSL certificate checker tool lets you check certificate validity online. It reads the certificate a…Open tool

These tools give you a snapshot. Keep watching your websites, APIs and networks automatically.

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Free tools by ScanTitan. Guidance only, not a guarantee of security.