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CVE-2018-4166

Status: ModifiedHigh (7)—

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "NSURLSession" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

CVSS

Exploitation probability (EPSS)

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).

Affected technologies (4)

Apple — Iphone OSApple — MAC OS XApple — TvosApple — Watchos

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2018-4166",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "acInsufInfo": false,
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    "cvssMetricV30": [
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        "cvssData": {
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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  "published": "2018-04-03T06:29:07.750",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-362"
        }
      ]
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  ],
  "descriptions": [
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      "value": "An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the \"NSURLSession\" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en algunos productos Apple. Las versiones de iOS anteriores a la 11.3, las versiones de macOS anteriores a la 10.13.4, las versiones de tvOS anteriores a la 11.3 y las versiones de watchOS anteriores a la 4.3 se han visto afectadas. El problema afecta al componente \"NSURLSession\". Una condición de carrera permite a los atacantes ejecutar código arbitrario en un contexto privilegiado mediante una app manipulada."
    }
  ],
  "lastModified": "2026-06-17T01:58:29.177",
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}