How severe is CVE-2004-1133?

CVE-2004-1133 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2004-1133 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1133?

CVE-2004-1133 affects Microsoft W3who.dll. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-1133?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-1133 published?

CVE-2004-1133 was published on 2005-01-10 and last updated on 2026-06-16.

CVE-2004-1133

CVE-2004-1133 is a medium-severity vulnerability in Microsoft W3who.dll with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft W3who.dll
Published: 2005-01-10
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in Microsoft W3Who ISAPI (w3who.dll) allow remote attackers to inject arbitrary HTML and web script via (1) HTTP headers such as "Connection" or (2) invalid parameters whose values are echoed in the resulting error message.

Frequently asked questions

What is CVE-2004-1133?: Multiple cross-site scripting (XSS) vulnerabilities in Microsoft W3Who ISAPI (w3who.dll) allow remote attackers to inject arbitrary HTML and web script via (1) HTTP headers such as "Connection" or (2) invalid parameters whose values are echoed in the resulting error message.
How severe is CVE-2004-1133?: CVE-2004-1133 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2004-1133 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1133?: CVE-2004-1133 affects Microsoft W3who.dll. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-1133?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-1133 published?: CVE-2004-1133 was published on 2005-01-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:w3who.dll:*:*:*:*:*:*:*:*

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