{
  "id": "CVE-2025-59287",
  "url": "https://spydr.io/cve/CVE-2025-59287",
  "published": "2025-10-14T17:16:11.670Z",
  "modified": "2026-06-17T09:45:52.480Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "microsoft.com",
  "epss": 0.9998,
  "epss_percentile": 0.99981,
  "exploited": true,
  "kev": {
    "added": "2025-10-24",
    "due": "2025-11-14",
    "action": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability",
    "notes": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-59287 ; https://nvd.nist.gov/vuln/detail/CVE-2025-59287"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Microsoft"
  ],
  "products": [
    "Microsoft Windows Server 2012",
    "Microsoft Windows Server 2012 (Server Core installation)",
    "Microsoft Windows Server 2012 R2",
    "Microsoft Windows Server 2012 R2 (Server Core installation)",
    "Microsoft Windows Server 2016",
    "Microsoft Windows Server 2016 (Server Core installation)",
    "Microsoft Windows Server 2019",
    "Microsoft Windows Server 2019 (Server Core installation)",
    "Microsoft Windows Server 2022",
    "Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)",
    "Microsoft Windows Server 2025",
    "Microsoft Windows Server 2025 (Server Core installation)"
  ],
  "cwes": [
    "CWE-502"
  ],
  "description": "Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://hawktrace.com/blog/CVE-2025-59287",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/",
      "tags": [
        "Press/Media Coverage"
      ]
    },
    {
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59287",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}