CVE-2005-2089

Name: CVE-2005-2089
Creator: NVD / NIST
Published: 2005-07-05T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 30.97%

Last modified Jun 16, 2026

CVE-2005-2089 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 30.97% chance of exploitation in the next 30 days.

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."

Metrics

EPSS Probability

30.97%

98.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-444

Affected Software

Vendor	Product	Versions
Microsoft	Internet Information Services	5.0
Microsoft	Internet Information Services	6.0

References

http://seclists.org/lists/bugtraq/2005/Jun/0025.htmlMailing List, Third Party Advisory
http://www.securiteam.com/securityreviews/5GP0220G0U.htmlBroken Link
http://www.watchfire.com/resources/HTTP-Request-Smuggling.pdfBroken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/42899Third Party Advisory, VDB Entry
http://seclists.org/lists/bugtraq/2005/Jun/0025.htmlMailing List, Third Party Advisory
http://www.securiteam.com/securityreviews/5GP0220G0U.htmlBroken Link
http://www.watchfire.com/resources/HTTP-Request-Smuggling.pdfBroken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/42899Third Party Advisory, VDB Entry

Timeline

Published: Jul 5, 2005
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2005-2089?

How severe is CVE-2005-2089?

Severity scoring for CVE-2005-2089 is pending analysis. The EPSS model estimates a 30.97% probability of exploitation in the next 30 days.

How do I fix CVE-2005-2089?

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-2005-2089?

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

Scan your code now

Source: NVD / NIST