Servers and applications
CVE-2004-0836
Buffer overflow in the mysql_real_connect function in MySQL 4.x before 4.0.21, and 3.x before 3.23.49, allows remote DNS servers to cause a denial of service and possibly execute arbitrary code via a DNS response with a large address length (h_length).
- Severity
- High 10.0
- Published
- 3 Nov 2004
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 3.23.49, 4.0.21
- Exploit chance
- 9.8% in the next 30 daysHigher than 95% of CVEs. EPSS by FIRST, 12 Nov 2026
- Weakness
- Memory buffer errors (CWE-119)
- Attack
- Over the network · No login needed
- Attacker can
- Read data · Change data · Take it down
- CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
MySQLServers and applications · cpe:a:oracle:mysql |
|