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CVE-2009-1122
The WebDAV extension in Microsoft Internet Information Services (IIS) 5.0 on Windows 2000 SP4 does not properly decode URLs, which allows…
High7.5EPSS 98.4%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 98.4% · top 0.1% of all CVEs (3 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (7)
- oval:org.mitre.oval:def:5861 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 1022358 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- MS09-020 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- 35232 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- TA09-160A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- ADV-2009-1539 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 20090616 IIS WebDav Vulnerability CVE ID (opens in a new tab)mailing-listx_refsource_VIMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-1122)Record last updated .