{
  "id": "CVE-2024-4978",
  "url": "https://spydr.io/cve/CVE-2024-4978",
  "published": "2024-05-23T02:15:09.257Z",
  "modified": "2026-06-17T08:03:19.347Z",
  "score": 8.7,
  "severity": "high",
  "cvss_version": "4.0",
  "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "score_source": "CNA",
  "epss": 0.26937,
  "epss_percentile": 0.97991,
  "exploited": true,
  "kev": {
    "added": "2024-05-29",
    "due": "2024-06-19",
    "action": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability",
    "notes": "Please follow the vendor’s instructions as outlined in the public statements at https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack#remediation and https://www.javs.com/downloads; https://nvd.nist.gov/vuln/detail/CVE-2024-4978"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Justice AV Solutions",
    "javs"
  ],
  "products": [
    "Justice AV Solutions Viewer",
    "javs viewer"
  ],
  "cwes": [
    "CWE-506"
  ],
  "description": "Justice AV Solutions Viewer Setup 8.3.7.250-1 contains a malicious binary when executed and is signed with an unexpected authenticode signature. A remote, privileged threat actor may exploit this vulnerability to execute of unauthorized PowerShell commands.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": 8.7,
    "cvss_v31": 8.4,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://twitter.com/2RunJack2/status/1775052981966377148",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.javs.com/downloads/",
      "tags": [
        "Broken Link",
        "Product"
      ]
    },
    {
      "url": "https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4978",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4978",
  "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."
    }
  ]
}