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Vulnerability record · CVE-2004-0836 · published 3 November 2004

CVE-2004-0836: Oracle mysql memory buffer overflow vulnerability

Oracle · Mysql

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).

10.0 CVSS 2.0 High EPSS 9.8% · top 4.6% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
9.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
26References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

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).

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.mysql.com/bug.php?id=4017 ExploitVendor Advisory
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000892 Broken Link
http://lists.mysql.com/internals/14726 Vendor Advisory
http://marc.info/?l=bugtraq&m=110140517515735&w=2 Mailing ListThird Party Advisory
http://secunia.com/advisories/12305/ Third Party Advisory
http://www.ciac.org/ciac/bulletins/p-018.shtml Broken Link
http://www.debian.org/security/2004/dsa-562 Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200410-22.xml Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2004-597.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2004-611.html PatchVendor Advisory
http://www.securityfocus.com/bid/10981 Third Party AdvisoryVDB Entry
http://www.trustix.org/errata/2004/0054/ Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/17047 Third Party AdvisoryVDB Entry
http://bugs.mysql.com/bug.php?id=4017 ExploitVendor Advisory
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000892 Broken Link
http://lists.mysql.com/internals/14726 Vendor Advisory
http://marc.info/?l=bugtraq&m=110140517515735&w=2 Mailing ListThird Party Advisory
http://secunia.com/advisories/12305/ Third Party Advisory
http://www.ciac.org/ciac/bulletins/p-018.shtml Broken Link
http://www.debian.org/security/2004/dsa-562 Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200410-22.xml Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2004-597.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2004-611.html PatchVendor Advisory
http://www.securityfocus.com/bid/10981 Third Party AdvisoryVDB Entry
http://www.trustix.org/errata/2004/0054/ Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/17047 Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2004-0836), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.