HOMEVULNERABILITIESCVE-2004-0836
CRITICAL

CVE-2004-0836

CWE-119Published: November 3, 2004· Updated: Jun 16, 2026

10.0
CVSS v3.1

Official 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).

NVD Source

Technical Analysis

CVE-2004-0836 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors & Products

Debian1 product(s)
debian linux
Oracle1 product(s)
mysql
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.redhat.com/support/errata/RHSA-2004-597.html
PATCHhttp://www.redhat.com/support/errata/RHSA-2004-611.html
PATCHhttp://www.redhat.com/support/errata/RHSA-2004-597.html
PATCHhttp://www.redhat.com/support/errata/RHSA-2004-611.html
ADVISORYhttp://bugs.mysql.com/bug.php?id=4017
ADVISORYhttp://lists.mysql.com/internals/14726
ADVISORYhttp://marc.info/?l=bugtraq&m=110140517515735&w=2
ADVISORYhttp://secunia.com/advisories/12305/
ADVISORYhttp://www.debian.org/security/2004/dsa-562
ADVISORYhttp://www.gentoo.org/security/en/glsa/glsa-200410-22.xml
ADVISORYhttp://www.securityfocus.com/bid/10981
ADVISORYhttp://www.trustix.org/errata/2004/0054/
ADVISORYhttps://exchange.xforce.ibmcloud.com/vulnerabilities/17047
ADVISORYhttp://bugs.mysql.com/bug.php?id=4017
ADVISORYhttp://lists.mysql.com/internals/14726
ADVISORYhttp://marc.info/?l=bugtraq&m=110140517515735&w=2
ADVISORYhttp://secunia.com/advisories/12305/
ADVISORYhttp://www.debian.org/security/2004/dsa-562
ADVISORYhttp://www.gentoo.org/security/en/glsa/glsa-200410-22.xml
ADVISORYhttp://www.securityfocus.com/bid/10981
ADVISORYhttp://www.trustix.org/errata/2004/0054/
ADVISORYhttps://exchange.xforce.ibmcloud.com/vulnerabilities/17047

All References (26)

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

Quick Facts

CVE IDCVE-2004-0836
CVSS Score10.0 / 10
SeverityCRITICAL
WeaknessCWE-119
CISA KEVNo
Affected2 vendor(s)
PublishedNov 3, 2004

Related CVEs (CWE-119)

CVE-2008-7232
10.0
CVE-2013-0230
10.0
CVE-2022-4291
10.0
CVE-2024-25029
10.0
CVE-2009-1227
10.0
CVE-2014-1201
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2004-0836 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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