{
  "id": "CVE-2025-40551",
  "url": "https://spydr.io/cve/CVE-2025-40551",
  "published": "2026-01-28T08:16:02.273Z",
  "modified": "2026-06-17T09:21:44.487Z",
  "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": "solarwinds.com",
  "epss": 0.84181,
  "epss_percentile": 0.99691,
  "exploited": true,
  "kev": {
    "added": "2026-02-03",
    "due": "2026-02-06",
    "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": "SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability",
    "notes": "https://www.solarwinds.com/trust-center/security-advisories/cve-2025-40551 ; https://nvd.nist.gov/vuln/detail/CVE-2025-40551"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "SolarWinds"
  ],
  "products": [
    "SolarWinds Web Help Desk"
  ],
  "cwes": [
    "CWE-502"
  ],
  "description": "SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40551",
  "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."
    }
  ]
}