{"cve":"CVE-2013-2028","nvd":{"published":"2013-07-20T03:37:20.730","modified":"2026-06-16T23:52:36.810","status":"Modified","description":"The ngx_http_parse_chunked function in http/ngx_http_parse.c in nginx 1.3.9 through 1.4.0 allows remote attackers to cause a denial of service (crash) and execute arbitrary code via a chunked Transfer-Encoding request with a large chunk size, which triggers an integer signedness error and a stack-based buffer overflow.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-787"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105176.html","http://mailman.nginx.org/pipermail/nginx-announce/2013/000112.html","http://nginx.org/download/patch.2013.chunked.txt","http://packetstormsecurity.com/files/121675/Nginx-1.3.9-1.4.0-Denial-Of-Service.html","http://secunia.com/advisories/55181"],"products":["f5:nginx","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-2028","score":0.87475,"percentile":0.99756,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}