{
    "id": "CVE-2017-9248",
    "published": "2017-07-03 19:29:00",
    "last_modified": "2026-06-17 01:27:44",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-522",
    "description": "Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 and Sitefinity before 10.0.6412.0 does not properly protect Telerik.Web.UI.DialogParametersEncryptionKey or the MachineKey, which makes it easier for remote attackers to defeat cryptographic protection mechanisms, leading to a MachineKey leak, arbitrary file uploads or downloads, XSS, or ASP.NET ViewState compromise.",
    "epss_score": "0.75098",
    "epss_percentile": "0.99495",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:21:37",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "products": [
        {
            "vendor": "progress",
            "product": "sitefinity"
        },
        {
            "vendor": "telerik",
            "product": "ui_for_asp.net_ajax"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2017-9248",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "Progress",
        "product": "ASP.NET AJAX and Sitefinity",
        "name": "Progress Telerik UI for ASP.NET AJAX and Sitefinity Cryptographic Weakness Vulnerability",
        "ransomware": 0
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "43873",
            "title": "Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Encryption Keys Disclosure",
            "date": "2018-01-24",
            "url": "https://www.exploit-db.com/exploits/43873"
        }
    ],
    "refs_list": [
        "http://www.securityfocus.com/bid/99965",
        "http://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity",
        "http://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness",
        "https://www.exploit-db.com/exploits/43873/",
        "http://www.securityfocus.com/bid/99965",
        "http://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity",
        "http://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness",
        "https://www.exploit-db.com/exploits/43873/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9248"
    ]
}