{"id":"CVE-2009-2417","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-2417","generatedAt":"2026-10-27T20:42:06.328Z","title":"lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof…","description":"lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","published":"2009-08-14T15:16:27.000Z","lastModified":"2026-06-16T23:09:25.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":["CWE-310"],"affected":["curl/libcurl","libcurl/libcurl"],"epss":{"score":0.03461,"percentile":0.88961,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://curl.haxx.se/CVE-2009-2417/curl-7.10.6-CVE-2009-2417.patch","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://curl.haxx.se/CVE-2009-2417/curl-7.11.0-CVE-2009-2417.patch","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://curl.haxx.se/CVE-2009-2417/curl-7.12.1-CVE-2009-2417.patch","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://curl.haxx.se/CVE-2009-2417/curl-7.15.1-CVE-2009-2417.patch","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://curl.haxx.se/CVE-2009-2417/curl-7.15.5-CVE-2009-2417.patch","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://curl.haxx.se/CVE-2009-2417/curl-7.16.4-CVE-2009-2417.patch","tags":["Patch","Vendor 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