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CVE-2002-1123

78
FAUCET Score

CVE-2002-1123 is a critical buffer overflow vulnerability affecting Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000. This flaw allows unauthenticated remote attackers to execute arbitrary code by sending a specially crafted, long request to TCP port 1433, commonly known as the "Hello" overflow. With a CVSS score of 7.5 and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its network-based attack vector and low attack complexity, potentially leading to full compromise of affected systems. While not listed on CISA's KEV catalog, exploit modules are readily available in Metasploit and ExploitDB, indicating a high likelihood of exploitation, despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:data_engine:2000:*:*:*:*:*:*:*
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:sql_server:2000:*:*:*:*:*:*:*
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:sql_server:2000:sp1:*:*:*:*:*:*
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:sql_server:2000:sp2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
77.71%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: MS02-056 Microsoft SQL Server Hello Overflow · Aug 5, 2002
ExploitDB: EDB-16398 · Apr 30, 2010
This CVE's current EPSS score of 0.7771 is in the 99th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
online.securityfocus.com / archive/1/286220
docs.microsoft.com / en-us/security-updates/securitybulletins/2002/ms02-056
ciac.org / ciac/bulletins/n-003.shtml
iss.net / security_center/static/9788.php
Vendor Advisory
securityfocus.com / bid/5411