Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of www.cisa.gov. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Start 2026-10-09 22:16:45 -->> 23.210.150.135:443 (www.cisa.gov) <<-- Further IP addresses: 2600:1407:7400:b80::3ff9 2600:1407:7400:b95::3ff9 rDNS (23.210.150.135): a23-210-150-135.deploy.static.akamaitechnologies.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 200 OK HTTP clock skew 0 sec from localtime Strict Transport Security 365 days=31536000 s, includeSubDomains Public Key Pinning -- Server banner (no "Server" line in header, interesting!) Application banner -- Cookie(s) (none issued at "/") Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy-Report-Only: default-src *.cisa.gov; script-src *.cisa.gov 'unsafe-inline' 'unsafe-eval' www.googletagmanager.com cse.google.com cdn.jsdelivr.net www.google.com www.youtube.com dap.digitalgov.gov cdnjs.cloudflare.com siteimproveanalytics.com *.adtrafficquality.google gov1.siteintercept.qualtrics.com *.gov1.siteintercept.qualtrics.com clients1.google.com; style-src 'unsafe-inline' *.cisa.gov fonts.googleapis.com www.google.com cdnjs.cloudflare.com; img-src *.cisa.gov data: www.google.com clients1.google.com www.googletagmanager.com *.siteimproveanalytics.io *.adtrafficquality.google gov1.siteintercept.qualtrics.com; frame-src *.cisa.gov *.dhs.gov www.youtube.com *.adtrafficquality.google syndicatedsearch.goog; font-src *.cisa.gov fonts.gstatic.com; connect-src *.cisa.gov www.google-analytics.com www.googletagmanager.com *.adtrafficquality.google gov1.sr.qualtrics.com gov1.siteintercept.qualtrics.com www.google.com analytics.google.com stats.g.doubleclick.net syndicatedsearch.goog gov1.qualtrics.com; report-uri /report-csp-violation Cache-Control: private, no-cache, must-revalidate Reverse Proxy banner -- Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) -- mitigated (disconnect after 2/10 attempts) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) potentially NOT ok, "gzip" HTTP compression detected. - only supplied "/" tested Can be ignored for static pages or if no secrets in the page POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) No fallback possible (OK), no protocol below TLS 1.2 offered SWEET32 (CVE-2016-2183, CVE-2016-6329) not vulnerable (OK) FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=2399EB660CF67E5F529D4C1A2F725D1E1E1882952EEC60D4D085E1FCF018040F LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) not vulnerable (OK), no SSL3 or TLS1 LUCKY13 (CVE-2013-0169), experimental not vulnerable (OK) Winshock (CVE-2014-6321), experimental not vulnerable (OK) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-09 22:17:43 [ 69s] -->> 23.210.150.135:443 (www.cisa.gov) <<--
About this Scan
This scan uses testssl.sh to check for:
- Protocols: SSLv2, SSLv3, TLS 1.0, TLS 1.1, TLS 1.2, TLS 1.3
- Vulnerabilities: Heartbleed, POODLE, FREAK, Logjam, DROWN, etc.
- Cipher Suites: Weak ciphers, perfect forward secrecy (PFS) support.