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CVE-2005-2089

26
FAUCET Score

CVE-2005-2089 describes an HTTP Request Smuggling vulnerability affecting Microsoft IIS 5.0 and 6.0. Attackers can poison web caches, bypass WAFs, and conduct XSS attacks by sending HTTP requests with both "Transfer-Encoding: chunked" and "Content-Length" headers, leading IIS to misinterpret and forward the request body as a separate request. The vulnerability has a CVSS score of 4.3 (medium severity), indicating network access, medium complexity, and potential for partial integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_services:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
30.97%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3097 is in the 99th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

seclists.org / lists/bugtraq/2005/Jun/0025.html
Mailing ListThird Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/42899
Third Party AdvisoryVDB Entry
securiteam.com / securityreviews/5GP0220G0U.html
Broken Link
watchfire.com / resources/HTTP-Request-Smuggling.pdf
Broken Link