CVE-2004-1134

CVE-2004-1134 is a critical-severity vulnerability in Microsoft W3who.dll with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 72% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Buffer overflow in the Microsoft W3Who ISAPI (w3who.dll) allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long query string.

Frequently asked questions

What is CVE-2004-1134?
Buffer overflow in the Microsoft W3Who ISAPI (w3who.dll) allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long query string.
How severe is CVE-2004-1134?
CVE-2004-1134 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2004-1134 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 72% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1134?
CVE-2004-1134 affects Microsoft W3who.dll. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-1134?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2004-1134 published?
CVE-2004-1134 was published on 2005-01-10 and last updated on 2026-06-16.

References

Affected products (1)

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