{
  "id": "cve-2025-43520",
  "cveID": "CVE-2025-43520",
  "vendor": "Apple",
  "product": "Multiple Products",
  "vulnerabilityName": "Apple Multiple Products Classic Buffer Overflow Vulnerability",
  "shortDescription": "Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS contain a classic buffer overflow vulnerability which could allow a malicious application to cause unexpected system termination or write kernel memory.",
  "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "dateAdded": "2026-03-20",
  "dueDate": "2026-04-03",
  "knownRansomware": false,
  "cwes": [
    "CWE-120"
  ],
  "notes": "https://support.apple.com/en-us/125632 ; https://support.apple.com/en-us/125633 ; https://support.apple.com/en-us/125634 ; https://support.apple.com/en-us/125635 ; https://support.apple.com/en-us/125636 ; https://support.apple.com/en-us/125637 ; https://support.apple.com/en-us/125638 ; https://support.apple.com/en-us/125639 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43520",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43520"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125632"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125633"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125634"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125635"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125636"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125637"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125638"
    },
    {
      "label": "support.apple.com",
      "url": "https://support.apple.com/en-us/125639"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43520"
    }
  ],
  "cvss": {
    "score": 5.5,
    "severity": "MEDIUM",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  },
  "epss": {
    "score": 0.00425,
    "percentile": 0.35855
  },
  "timeline": [
    {
      "date": "2026-03-20",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2026-04-03",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}