CVE-2004-0840
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition,...
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated.
Exploit likelihood
What each source reports
NVD Score used
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated.
- Record
CVE-2004-0840- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated.
- Record
CVE-2004-0840- Updated
- 2026-11-02
EUVDEUVD-2004-0838 No score
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated.
- Record
EUVD-2004-0838- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6xx6-74w2-pvf3 No score
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition,...
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated.
- Record
GHSA-6xx6-74w2-pvf3- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2004-0840 is a high vulnerability (CVSS 10.0) in Microsoft Exchange Server, published October 16, 2004. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 30.3%, the 98th percentile. No source names a fixed version.
References
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2300
securityfocus.com/bid/11374
docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-035
exchange.xforce.ibmcloud.com/vulnerabilities/17660