{"id":"CVE-2004-0400","aliases":["DEBIAN-CVE-2004-0400","DSA-501","DSA-502","EUVD-2004-0400","GHSA-qx32-c2q2-cgcr"],"status":"published","title":"Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is...","description":"Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code during the header check.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.06974,"percentile":0.94173,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2004-05-07T00:00:00Z","modified":"2026-10-21T15:47:29Z","fixes":[{"ecosystem":"Debian:12","package":"exim4","fixed_in":["4.33-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"exim4","fixed_in":["4.33-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"exim4","fixed_in":["4.33-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.33-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.33-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.33-1"}]}]},{"source":"osv","ecosystem":"Debian:3.0","package":"exim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.35-1woody3"}]}],"bundled":2},{"source":"osv","ecosystem":"Debian:3.0","package":"exim-tls","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.35-3woody2"}]}],"versions":["3.35-3woody1"],"bundled":2}],"products":[{"vendor":"university_of_cambridge","product":"exim"}],"references":[{"url":"http://www.debian.org/security/2004/dsa-502","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.debian.org/security/2004/dsa-501","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://lists.grok.org.uk/pipermail/full-disclosure/2004-May/021015.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","web"]},{"url":"http://www.guninski.com/exim1.html","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Vendor Advisory","advisory","evidence","fix"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/16077","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-0400"},{"url":"https://github.com/advisories/GHSA-qx32-c2q2-cgcr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2004-0400","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2004-0400","description":"Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote 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check.","status":"published","published":"2022-04-29T02:57:40Z","modified":"2023-01-30T05:02:42Z","updated_at":"2026-11-02T14:46:42.161058Z"}],"nvd":[{"id":"CVE-2004-0400","description":"Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code during the header check.","status":"published","published":"2004-07-07T04:00:00Z","modified":"2026-06-16T22:05:34.03Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:49.729639Z"}],"osv":[{"id":"CVE-2004-0400","description":"Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code during the header check.","status":"published","published":"2004-07-07T04:00:00Z","modified":"2026-04-10T03:36:23.838556Z","updated_at":"2026-11-02T15:43:56.315348Z"},{"id":"DEBIAN-CVE-2004-0400","description":"Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code during the header check.","status":"published","published":"2004-07-07T04:00:00Z","modified":"2026-10-21T15:47:29.018087209Z","updated_at":"2026-11-02T15:45:22.55978Z"},{"id":"DSA-501","title":"exim - buffer overflow","status":"published","published":"2004-05-07T00:00:00Z","modified":"2026-03-09T02:09:25.528155Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"DSA-502","title":"exim-tls - buffer overflow","status":"published","published":"2004-05-11T00:00:00Z","modified":"2026-03-09T02:10:19.480171Z","updated_at":"2026-11-02T15:46:17.543497Z"}]}}