Is CVE-2005-2089 in the CISA KEV catalog?

No. CVE-2005-2089 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2005-2089?

CVE-2005-2089 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2005-2089?

CVE-2005-2089 has an EPSS score of 30.97% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2005-2089

MEDIUMEPSS 98th pctl

4.3

CVSS v2

NVD

Description

Microsoft IIS 5.0 and 6.0 allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes IIS to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."

CWE-444

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

30.97%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.