{"id":"CVE-2009-3663","aliases":["EUVD-2009-3638","GHSA-gj4q-m5q3-4wfq"],"status":"published","title":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4...","description":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.14632,"percentile":0.96677,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-134"],"published":"2009-10-11T22:00:00Z","modified":"2026-06-16T23:12:07Z","exploits":[{"source":"exploitdb","id":"EDB-9657","title":"httpdx 1.4 - HTTP Server Host Header Remote Format String Denial of Service","type":"dos","platform":"windows","date":"2009-09-14","verified":true,"url":"https://www.exploit-db.com/exploits/9657"}],"products":[{"vendor":"jasper","product":"httpdx"}],"references":[{"url":"http://osvdb.org/58129","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/53205","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.exploit-db.com/exploits/9657","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://secunia.com/advisories/36734","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/2654","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Patch","Vendor Advisory"]},{"url":"http://httpdx.sourceforge.net/downloads/changelog.log","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-3663"},{"url":"https://github.com/advisories/GHSA-gj4q-m5q3-4wfq"}],"sources":{"cve":[{"id":"CVE-2009-3663","description":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.","status":"published","published":"2009-10-11T22:00:00Z","modified":"2024-08-07T06:38:30.26Z","updated_at":"2026-11-02T14:33:23.749891Z"}],"euvd":[{"id":"EUVD-2009-3638","description":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.","status":"published","published":"2009-10-11T22:00:00Z","modified":"2024-08-07T06:38:30Z","updated_at":"2026-11-03T01:39:12.69352Z"}],"ghsa":[{"id":"GHSA-gj4q-m5q3-4wfq","title":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4...","description":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.","status":"published","published":"2022-05-02T03:47:22Z","modified":"2023-01-31T05:09:16Z","cwes":["CWE-134"],"updated_at":"2026-11-02T14:49:29.970425Z"}],"nvd":[{"id":"CVE-2009-3663","description":"Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.","status":"published","published":"2009-10-11T22:30:00.593Z","modified":"2026-06-16T23:12:07.34Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:01:37.004244Z"}]}}