{
    "id": "CVE-2012-1858",
    "published": "2012-06-12 22:55:01",
    "last_modified": "2026-06-16 23:40:26",
    "cvss_score": "4.3",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
    "cwe": "CWE-200",
    "description": "The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted HTML document, aka \"HTML Sanitization Vulnerability.\"",
    "epss_score": "0.22024",
    "epss_percentile": "0.97591",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "internet_explorer"
        },
        {
            "vendor": "microsoft",
            "product": "lync"
        },
        {
            "vendor": "microsoft",
            "product": "office_communicator"
        },
        {
            "vendor": "microsoft",
            "product": "windows_2003_server"
        },
        {
            "vendor": "microsoft",
            "product": "windows_7"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2003"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2008"
        },
        {
            "vendor": "microsoft",
            "product": "windows_vista"
        },
        {
            "vendor": "microsoft",
            "product": "windows_xp"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "19777",
            "title": "Microsoft Internet Explorer 9 / SharePoint / Lync - toStaticHTML HTML Sanitizing Bypass (MS12-037/MS12-039/MS12-050)",
            "date": "2012-07-12",
            "url": "https://www.exploit-db.com/exploits/19777"
        }
    ],
    "refs_list": [
        "http://www.us-cert.gov/cas/techalerts/TA12-164A.html",
        "http://www.us-cert.gov/cas/techalerts/TA12-192A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-050",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15530",
        "http://www.us-cert.gov/cas/techalerts/TA12-164A.html",
        "http://www.us-cert.gov/cas/techalerts/TA12-192A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-050",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15530"
    ]
}