CVE-2005-2089 json
Microsoft IIS 5.0 and 6.0 allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS atta…
published 2005-06-30 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-2091
- cvss
- 4.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 31.0%
- EPSS 31.0% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
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."
Exploit prediction
30.97% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-444 Inconsistent Interpretation of HTTP Requests
References
-
exchange.xforce.ibmcloud.com
/vulnerabilities/42899
vdb-entry, third-party-advisory
-
securiteam.com
/securityreviews/5GP0220G0U.html
broken-link
-
watchfire.com
/resources/HTTP-Request-Smuggling.pdf
broken-link
-
seclists.org
/lists/bugtraq/2005/Jun/0025.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2005-2089
- NVD CVE-2005-2089
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.