CVE-2004-0840

Name: CVE-2004-0840
Creator: NVD / NIST
Published: 2004-11-03T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 30.29%

Last modified Jun 16, 2026

CVE-2004-0840 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 30.29% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

30.29%

98.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Microsoft	Exchange Server	2003
Microsoft	Windows Server 2003	All versions
Microsoft	Windows Server 2003	r2
Microsoft	Windows Xp	All versions

References

http://www.kb.cert.org/vuls/id/394792Patch, Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/11374Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-035Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/17621Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/17660Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2300Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3460Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5509Third Party Advisory
http://www.kb.cert.org/vuls/id/394792Patch, Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/11374Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-035Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/17621Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/17660Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2300Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3460Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5509Third Party Advisory

Timeline

Published: Nov 3, 2004
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2004-0840?

How severe is CVE-2004-0840?

Severity scoring for CVE-2004-0840 is pending analysis. The EPSS model estimates a 30.29% probability of exploitation in the next 30 days.

How do I fix CVE-2004-0840?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2004-0840?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST