{"id":"CVE-2002-1123","aliases":["EUVD-2002-1111","GHSA-wmvx-9r42-6cq7"],"status":"published","title":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft...","description":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 allows remote attackers to execute arbitrary code via a long request to TCP port 1433, aka the \"Hello\" overflow.","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":"2026-11-09","score":0.77712,"percentile":0.99569,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2002-09-24T04:00:00Z","modified":"2026-06-16T21:58:46Z","exploits":[{"source":"exploitdb","id":"EDB-16398","title":"Microsoft SQL Server - Hello Overflow (MS02-056) (Metasploit)","type":"remote","platform":"windows","date":"2010-04-30","verified":true,"url":"https://www.exploit-db.com/exploits/16398"},{"source":"exploitdb","id":"EDB-21693","title":"Microsoft SQL Server 2000 - User Authentication Remote Buffer Overflow","type":"remote","platform":"windows","date":"2002-08-06","verified":true,"url":"https://www.exploit-db.com/exploits/21693"},{"source":"metasploit","id":"exploit/windows/mssql/ms02_056_hello","title":"MS02-056 Microsoft SQL Server Hello Overflow","type":"exploit","platform":"Windows","date":"2002-08-05","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/mssql/ms02_056_hello"}],"products":[{"vendor":"microsoft","product":"data_engine"},{"vendor":"microsoft","product":"sql_server"}],"references":[{"url":"http://online.securityfocus.com/archive/1/286220","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/bid/5411","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-056","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.ciac.org/ciac/bulletins/n-003.shtml","tags":["third-party-advisory","government-resource","x_refsource_CIAC","x_transferred"]},{"url":"http://www.iss.net/security_center/static/9788.php","tags":["vdb-entry","x_refsource_XF","x_transferred","Vendor Advisory"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102873609025020\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-1123"},{"url":"https://github.com/advisories/GHSA-wmvx-9r42-6cq7"}],"sources":{"cve":[{"id":"CVE-2002-1123","description":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 allows remote attackers to execute arbitrary code via a long request to TCP port 1433, aka the \"Hello\" overflow.","status":"published","published":"2004-09-01T04:00:00Z","modified":"2024-08-08T03:12:17.062Z","updated_at":"2026-11-02T14:33:54.641433Z"}],"euvd":[{"id":"EUVD-2002-1111","description":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 allows remote attackers to execute arbitrary code via a long request to TCP port 1433, aka the \"Hello\" overflow.","status":"published","published":"2004-09-01T04:00:00Z","modified":"2024-08-08T03:12:17Z","updated_at":"2026-11-03T01:14:57.683744Z"}],"ghsa":[{"id":"GHSA-wmvx-9r42-6cq7","title":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft...","description":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 allows remote attackers to execute arbitrary code via a long request to TCP port 1433, aka the \"Hello\" overflow.","status":"published","published":"2022-04-30T18:20:36Z","modified":"2023-01-30T05:06:17Z","updated_at":"2026-11-02T14:47:27.706348Z"}],"nvd":[{"id":"CVE-2002-1123","description":"Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 allows remote attackers to execute arbitrary code via a long request to TCP port 1433, aka the \"Hello\" overflow.","status":"published","published":"2002-09-24T04:00:00Z","modified":"2026-06-16T21:58:46.197Z","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":"2026-11-02T14:00:42.827505Z"}]}}