CVE-2002-1123

NONECVSS 0.0Weaponized

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 99.5%
KEV: Not listed

Published

September 24, 2002

Last Modified

April 16, 2026

References (12)

cve@mitrehttp://marc.info/?l=bugtraq&m=102873609025020&w=2
cve@mitrehttp://online.securityfocus.com/archive/1/286220
cve@mitrehttp://www.ciac.org/ciac/bulletins/n-003.shtml
cve@mitrehttp://www.iss.net/security_center/static/9788.php
cve@mitrehttp://www.securityfocus.com/bid/5411
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-056
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=102873609025020&w=2
af854a3a-2127-422b-91ae-364da2661108http://online.securityfocus.com/archive/1/286220
af854a3a-2127-422b-91ae-364da2661108http://www.ciac.org/ciac/bulletins/n-003.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.iss.net/security_center/static/9788.php
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/5411
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-056

Data Freshness Timeline

(refreshed 7× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-16398✓ verified
First seen Apr 30, 2010
Microsoft SQL Server - Hello Overflow (MS02-056) (Metasploit)
Open source ↗
Exploit-DBEDB-21693✓ verified
First seen Aug 6, 2002
Microsoft SQL Server 2000 - User Authentication Remote Buffer Overflow
Open source ↗
Metasploitexploit/windows/mssql/ms02_056_hello✓ verified
First seen Aug 5, 2002
MS02-056 Microsoft SQL Server Hello Overflow
Open source ↗

Frequently asked(4)

What is CVE-2002-1123?

CVE-2002-1123 is a none vulnerability published on September 24, 2002. 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.

When was CVE-2002-1123 disclosed?

CVE-2002-1123 was first published in the National Vulnerability Database on September 24, 2002, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2002-1123 actively exploited?

CVE-2002-1123 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2002-1123?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-1123, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2002-1123

📅 Published

🔄 Last Modified

🔗 References (12)