{
    "id": "CVE-2020-1025",
    "published": "2020-07-14 23:15:11",
    "last_modified": "2026-06-17 03:00:15",
    "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-20",
    "description": "An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access.\nTo exploit this vulnerability, an attacker would need to modify the token.\nThe update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.",
    "epss_score": "0.05853",
    "epss_percentile": "0.92986",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-06 18:17:22",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "lync"
        },
        {
            "vendor": "microsoft",
            "product": "sharepoint_enterprise_server"
        },
        {
            "vendor": "microsoft",
            "product": "sharepoint_foundation"
        },
        {
            "vendor": "microsoft",
            "product": "sharepoint_server"
        },
        {
            "vendor": "microsoft",
            "product": "skype_for_business"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025"
    ]
}