CVE-2004-0840

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.

• CWE-20

• 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

Published

Nov 3, 2004

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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