{
    "id": "CVE-2009-1535",
    "published": "2009-06-10 14:30:00",
    "last_modified": "2026-06-16 23:07:28",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-287",
    "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.",
    "epss_score": "0.98115",
    "epss_percentile": "0.99912",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:16:37",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "internet_information_services"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2003"
        },
        {
            "vendor": "microsoft",
            "product": "windows_xp"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "8806",
            "title": "Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (2)",
            "date": "2009-05-26",
            "url": "https://www.exploit-db.com/exploits/8806"
        },
        {
            "source": "exploit-db",
            "ref_id": "8704",
            "title": "Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (1)",
            "date": "2009-05-15",
            "url": "https://www.exploit-db.com/exploits/8704"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0135.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0139.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0144.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdf",
        "http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.html",
        "http://isc.sans.org/diary.html?n&storyid=6397",
        "http://view.samurajdata.se/psview.php?id=023287d6&page=1",
        "http://www.attrition.org/pipermail/vim/2009-June/002192.html",
        "http://www.us-cert.gov/cas/techalerts/TA09-160A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6029",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0135.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0139.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0144.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/att-0135/IIS_Advisory.pdf",
        "http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.html",
        "http://isc.sans.org/diary.html?n&storyid=6397",
        "http://view.samurajdata.se/psview.php?id=023287d6&page=1",
        "http://www.attrition.org/pipermail/vim/2009-June/002192.html",
        "http://www.us-cert.gov/cas/techalerts/TA09-160A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-020",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6029"
    ]
}