VulnerabilityModified

CVE-2004-0203

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.

MEDIUM 4.3EPSS 21.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 21.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

CVSS 2.0: 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS: 20.98% probability · 98th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-79
Affected: microsoft/exchange server
Source: cve@mitre.org

EPSS trend

EPSS 21.0% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.