CVE-2004-0203

Name: CVE-2004-0203
Creator: NVD / NIST
Published: 2004-11-23T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 20.98%

Last modified Jun 16, 2026

CVE-2004-0203 is a vulnerability of currently unknown severity. Cross-site scripting (XSS) vulnerability in Outlook Web Access for Exchange Server 5.5 Service Pack 4 allows remote attackers to insert arbitrary script and spoof content in HTML email or web caches via an HTML redirect query.. EPSS estimates a 20.98% chance of exploitation in the next 30 days.

Description

Cross-site scripting (XSS) vulnerability in Outlook Web Access for Exchange Server 5.5 Service Pack 4 allows remote attackers to insert arbitrary script and spoof content in HTML email or web caches via an HTML redirect query.

Metrics

EPSS Probability

20.98%

97.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Microsoft	Exchange Server	5.5

References

http://www.kb.cert.org/vuls/id/948750Third Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-026Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16583Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2016Third Party Advisory
http://www.kb.cert.org/vuls/id/948750Third Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-026Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16583Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2016Third Party Advisory

Timeline

Published: Nov 23, 2004
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2004-0203?

How severe is CVE-2004-0203?

Severity scoring for CVE-2004-0203 is pending analysis. The EPSS model estimates a 20.98% probability of exploitation in the next 30 days.

How do I fix CVE-2004-0203?

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-2004-0203?

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

Scan your code now

Source: NVD / NIST