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CVE-2009-1535
The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection…
High7.5EPSS 98.1%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection mechanisms, and list folders or read, create, or modify files, via a %c0%af (Unicode / character) at an arbitrary position in the URI, as demonstrated by inserting %c0%af into a "/protected/" initial pathname component to bypass the password protection on the protected\ folder, aka "IIS 5.1 and 6.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1122.
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)
- 98.1% · top 0.1% of all CVEs (5 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 (11)
- oval:org.mitre.oval:def:6029 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- MS09-020 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- http://view.samurajdata.se/psview.php?id=023287d6&page=1 (opens in a new tab)x_refsource_MISCx_transferred
- http://isc.sans.org/diary.html?n&storyid=6397 (opens in a new tab)x_refsource_MISCx_transferred
- 20090515 IIS6 + webdav and unicode rides again in 2009 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20090515 Re: IIS6 + webdav and unicode rides again in 2009 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.html (opens in a new tab)x_refsource_MISCx_transferred
- TA09-160A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdf (opens in a new tab)x_refsource_MISCx_transferred
- 20090515 Re: IIS6 + webdav and unicode rides again in 2009 (opens in a new tab)mailing-listx_refsource_FULLDISCx_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-2009-1535)Record last updated .