CVE-1999-0999

Microsoft SQL Server 7.0 - Denial of Service via Malformed TDS Packet

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0999. PoCs published by Kevork Belian.

AI-analyzed exploit summary This exploit sends a malformed TDS header with three NULL bytes to Microsoft SQL Server 7.0, causing a denial-of-service (DoS) via an access violation. The code establishes a TCP connection to port 1433 and transmits the crafted payload.

Description

Microsoft SQL 7.0 server allows a remote attacker to cause a denial of service via a malformed TDS packet.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Kevork Belian · cdoswindows
https://www.exploit-db.com/exploits/19638

This exploit sends a malformed TDS header with three NULL bytes to Microsoft SQL Server 7.0, causing a denial-of-service (DoS) via an access violation. The code establishes a TCP connection to port 1433 and transmits the crafted payload.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Microsoft SQL Server 7.0
No auth needed
Prerequisites: Network access to the target SQL Server on port 1433
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/817
Vendor Advisory vendor-advisory x_refsource_mskb
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ248749

Scores

EPSS 0.2168
EPSS Percentile 97.3%

Details

CWE
CWE-20
Status published
Products (1)
microsoft/sql_server 7.0
Published Nov 19, 1999
Tracked Since Feb 18, 2026