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Vulnerability record · CVE-2003-0904 · published 20 January 2004

CVE-2003-0904: Microsoft exchange server information exposure vulnerability

Microsoft · Exchange Server

Microsoft Exchange 2003 and Outlook Web Access (OWA), when configured to use NTLM authentication, does not properly reuse HTTP connections, which can cause OWA users to view mailboxes of other users when Kerberos has been disabled as an authentication method for IIS 6.0, e.g. when SharePoint Services 2.0 is installed.

6.0 CVSS 2.0 Medium EPSS 8.2% · top 5.3% CWE-200 · Information exposure
6.0CVSS 2.0 base score
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

Description

Microsoft Exchange 2003 and Outlook Web Access (OWA), when configured to use NTLM authentication, does not properly reuse HTTP connections, which can cause OWA users to view mailboxes of other users when Kerberos has been disabled as an authentication method for IIS 6.0, e.g. when SharePoint Services 2.0 is installed.

AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/10615 Third Party Advisory
http://www.kb.cert.org/vuls/id/530660 Third Party AdvisoryUS Government Resource
http://www.microsoft.com/exchange/support/e2k3owa.asp PatchVendor Advisory
http://www.ntbugtraq.com/default.asp?pid=36&sid=1&A2=ind0311&L=ntbugtraq&F=P&S=&P=9281 Third Party Advisory
http://www.securityfocus.com/bid/9118 Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/9409 Third Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-002 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/13869 Third Party AdvisoryVDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A477 Third Party Advisory
http://secunia.com/advisories/10615 Third Party Advisory
http://www.kb.cert.org/vuls/id/530660 Third Party AdvisoryUS Government Resource
http://www.microsoft.com/exchange/support/e2k3owa.asp PatchVendor Advisory
http://www.ntbugtraq.com/default.asp?pid=36&sid=1&A2=ind0311&L=ntbugtraq&F=P&S=&P=9281 Third Party Advisory
http://www.securityfocus.com/bid/9118 Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/9409 Third Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-002 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/13869 Third Party AdvisoryVDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A477 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2003-0904), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.