{"cve":"CVE-2003-0743","nvd":{"published":"2003-10-20T04:00:00.000","modified":"2026-06-16T22:02:44.890","status":"Modified","description":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the \"(no argument given)\" string is appended to the buffer.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000735","http://marc.info/?l=bugtraq&m=106252015820395&w=2","http://marc.info/?l=vuln-dev&m=106264740820334&w=2","http://packages.debian.org/changelogs/pool/main/e/exim/exim_3.36-13/changelog","http://packages.debian.org/changelogs/pool/main/e/exim4/exim4_4.34-10/changelog"],"products":["university_of_cambridge:exim"],"source":"nvd","synced_at":"2026-10-19T19:35:54.859949650+00:00"},"epss":{"cve":"CVE-2003-0743","score":0.0565,"percentile":0.92966,"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."]}