{"id":"CVE-2003-1177","aliases":["EUVD-2003-1167","GHSA-q77f-7g38-65hw"],"status":"published","title":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote...","description":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.","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":"2026-11-08","score":0.12925,"percentile":0.96336,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2003-12-31T05:00:00Z","modified":"2026-06-16T22:03:39Z","exploits":[{"source":"exploitdb","id":"EDB-23267","title":"Atrium Software Mercur MailServer 3.3/4.0/4.2 - IMAP AUTH Remote Buffer Overflow","type":"dos","platform":"windows","date":"2003-10-20","verified":true,"url":"https://www.exploit-db.com/exploits/23267"}],"products":[{"vendor":"atrium_software","product":"mercur_mailserver"}],"references":[{"url":"http://www.securityfocus.com/bid/8861","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"http://secunia.com/advisories/10038","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch"]},{"url":"http://www.securityfocus.com/bid/8889","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"http://www.osvdb.org/2688","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2003-q4/1459.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/13468","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.atrium-software.com/mail%20server/pub/mcr42sp3a.html","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securiteam.com/windowsntfocus/6U00N1P8KC.html","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2003-1177"},{"url":"https://github.com/advisories/GHSA-q77f-7g38-65hw"}],"sources":{"cve":[{"id":"CVE-2003-1177","description":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.","status":"published","published":"2005-05-10T04:00:00Z","modified":"2024-08-08T02:19:46.08Z","updated_at":"2026-11-02T14:20:16.411288Z"}],"euvd":[{"id":"EUVD-2003-1167","description":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.","status":"published","published":"2005-05-10T04:00:00Z","modified":"2024-08-08T02:19:46Z","updated_at":"2026-11-03T01:15:04.43595Z"}],"ghsa":[{"id":"GHSA-q77f-7g38-65hw","title":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote...","description":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.","status":"published","published":"2022-04-29T01:27:38Z","modified":"2023-01-30T05:01:56Z","updated_at":"2026-11-02T14:46:31.204916Z"}],"nvd":[{"id":"CVE-2003-1177","description":"Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.","status":"published","published":"2003-12-31T05:00:00Z","modified":"2026-06-16T22:03:39.843Z","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":"2026-11-02T14:00:47.41445Z"}]}}