CVE-2009-1122
HIGHEPSS 100th pctlDescription
The WebDAV extension in Microsoft Internet Information Services (IIS) 5.0 on Windows 2000 SP4 does not properly decode URLs, which allows remote attackers to bypass authentication, and possibly read or create files, via a crafted HTTP request, aka "IIS 5.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1535.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
References
- http://www.attrition.org/pipermail/vim/2009-June/002192.html
- http://www.securityfocus.com/bid/35232
- http://www.securitytracker.com/id?1022358
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.vupen.com/english/advisories/2009/1539
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5861
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Start freeThis 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 2026-04-23.