CVE-2025-43237

Status: ModifiedCritical (9.8)—

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6. An app may be able to cause unexpected system termination.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.53%
Percentile among all scored CVEs: 43
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access75 %

Vector CVSS AV:N/PR:N/UI:N indica explotación remota sin privilegios (T1190). CWE-787 (out-of-bounds write) permite ejecución de código arbitrario (T1059), aunque el texto enfatiza terminación inesperada del sistema (DoS potencial).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Filter Network Traffic Application Isolation and Sandboxing

Affected technologies (1)

Apple — Macos

CWEs

CWE-787

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2025-43237",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-43237",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-07-30T12:58:19.831147Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "macOS",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "15.6",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-07-30T00:15:35.677",
  "references": [
    {
      "url": "https://support.apple.com/en-us/124149",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "product-security@apple.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2025/Jul/32",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6. An app may be able to cause unexpected system termination."
    },
    {
      "lang": "es",
      "value": "Se solucionó un problema de escritura fuera de límites mejorando la comprobación de límites. Este problema se solucionó en macOS Sequoia 15.6. Una aplicación podría provocar el cierre inesperado del sistema."
    }
  ],
  "lastModified": "2026-06-17T09:23:33.793",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "077E4BB7-4A8B-4D18-BCD7-2938A2B8B9C8",
              "versionEndExcluding": "15.6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "product-security@apple.com"
}