How severe is CVE-2002-1123?

CVE-2002-1123 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-1123 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 78% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-1123?

CVE-2002-1123 primarily affects Microsoft Data Engine. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-1123?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2002-1123 published?

CVE-2002-1123 was published on 2002-09-24 and last updated on 2026-06-16.

CVE-2002-1123

CVE-2002-1123 is a high-severity vulnerability in Microsoft Data Engine with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 78% places it in the 100th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 78% (100th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Data Engine
Published: 2002-09-24
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2002-1123?: 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.
How severe is CVE-2002-1123?: CVE-2002-1123 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-1123 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 78% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1123?: CVE-2002-1123 primarily affects Microsoft Data Engine. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-1123?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2002-1123 published?: CVE-2002-1123 was published on 2002-09-24 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:microsoft:data_engine:2000:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:sql_server:2000:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:sql_server:2000:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sql_server:2000:sp2:*:*:*:*:*:*

More vulnerabilities in Microsoft Data Engine

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CVE-2000-1209 — Critical (CVSS 10.0): The "sa" account is installed with a default null password on (1) Microsoft SQL Server 2000, (2) SQL Server 7.0, and…
CVE-2008-0106 — Critical (CVSS 9.0): Buffer overflow in Microsoft SQL Server 2005 SP1 and SP2, and 2005 Express Edition SP1 and SP2, allows remote…
CVE-2008-0107 — Critical (CVSS 9.0): Integer underflow in SQL Server 7.0 SP4, 2000 SP4, 2005 SP1 and SP2, 2000 Desktop Engine (MSDE 2000) SP4, 2005 Express…
CVE-2008-0086 — Critical (CVSS 9.0): Buffer overflow in the convert function in Microsoft SQL Server 2000 SP4, 2000 Desktop Engine (MSDE 2000) SP4, and 2000…

All CVEs affecting Microsoft Data Engine →