Summary
generated automatically from NVD dataCVE-2004-0840 affects the SMTP component of Microsoft Windows XP 64-bit Edition and Windows Server 2003, as well as the Exchange Routing Engine in Exchange Server 2003. The flaw is improper validation of length values in a DNS response message (CWE-20), so a remote attacker who sends a malicious DNS response could execute arbitrary code. It is rated 10.0 (HIGH) under CVSS v2.0, with a network attack vector, low complexity and no authentication required.
NVD 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.
EPSS · FIRST.org
30.3%probability of exploitation in the next 30 days
Higher than 98% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-30, recomputed daily by FIRST.org.
CVSS v2.0 Score
Information
- Published
- 3 nov. 2004
- Updated
- 16 juin 2026
- Status
- Modified
- Source
- cve@mitre.org
Affected products
Bounds published by NVD: "< 8.4.27" means 8.4.27 is no longer vulnerable. The fixed release to install is in the vendor advisory.
Weaknesses (CWE)
References (16)
- http://www.kb.cert.org/vuls/id/394792PatchThird Party AdvisoryUS Government Resource
- http://www.securityfocus.com/bid/11374Third Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17621Third Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17660Third Party AdvisoryVDB Entry
- http://www.kb.cert.org/vuls/id/394792PatchThird Party AdvisoryUS Government Resource
- http://www.securityfocus.com/bid/11374Third Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17621Third Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17660Third Party AdvisoryVDB Entry
- + 1 more references on NVD
Similar CVEs
Other vulnerabilities of type CWE-20
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