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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 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.

    Published:Jun 10, 2009
    Last Modified:Apr 23, 2026
    EPS:Jun 10, 2009
    EPSS Score:0.92339
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Internet Information Services
    Vendor
    Microsoft
    Product
    Windows 2000

    Exploits

    https://www.exploit-db.com/exploits/8806

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

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    CVE-2017-7269 (CVSS 9.8) — Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (I…
    CVE-2014-4078 (CVSS 5.1) — The IP Security feature in Microsoft Internet Information Services (IIS) 8.0 and 8.5 does not properly process…
    CVE-2011-5279 (CVSS 5) — CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x an…
    CVE-2010-3972 (CVSS 10) — Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Se…
    CVE-2010-3332 (CVSS 6.4) — Microsoft .NET Framework 1.1 SP1, 2.0 SP1 and SP2, 3.5, 3.5 SP1, 3.5.1, and 4.0, as used for ASP.NET in Micros…
    CVE-2010-1899 (CVSS 4.3) — Stack consumption vulnerability in the ASP implementation in Microsoft Internet Information Services (IIS) 5.1…
    CVE-2010-2730 (CVSS 9.3) — Buffer overflow in Microsoft Internet Information Services (IIS) 7.5, when FastCGI is enabled, allows remote a…
    CVE-2009-4444 (CVSS 6) — Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semi…
    CVE-2009-4445 (CVSS 6) — Microsoft Internet Information Services (IIS), when used in conjunction with unspecified third-party upload ap…

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High