{
  "id": "CVE-2025-55177",
  "url": "https://spydr.io/cve/CVE-2025-55177",
  "published": "2025-08-29T16:15:36.723Z",
  "modified": "2026-06-17T09:41:24.433Z",
  "score": 5.4,
  "severity": "medium",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
  "score_source": "fb.com",
  "epss": 0.04304,
  "epss_percentile": 0.90853,
  "exploited": true,
  "kev": {
    "added": "2025-09-02",
    "due": "2025-09-23",
    "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": "Meta Platforms WhatsApp Incorrect Authorization Vulnerability",
    "notes": "https://www.whatsapp.com/security/advisories/2025/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-55177"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Facebook"
  ],
  "products": [
    "Facebook WhatsApp Desktop for Mac",
    "Facebook WhatsApp Business for iOS",
    "Facebook WhatsApp for iOS"
  ],
  "cwes": [
    "CWE-863"
  ],
  "description": "Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to v2.25.21.73, WhatsApp Business for iOS v2.25.21.78, and WhatsApp for Mac v2.25.21.78 could have allowed an unrelated user to trigger processing of content from an arbitrary URL on a target’s device. We assess that this vulnerability, in combination with an OS-level vulnerability on Apple platforms (CVE-2025-43300), may have been exploited in a sophisticated attack against specific targeted users.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 5.4,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://www.facebook.com/security/advisories/cve-2025-55177",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.whatsapp.com/security/advisories/2025/",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55177",
  "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."
    }
  ]
}