CVE-2026-20679 (GCVE-0-2026-20679)

Vulnerability from cvelistv5 – Published: 2026-08-21 00:38 – Updated: 2026-08-21 00:38
VLAI
Summary
The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination.
Severity
No CVSS data available.
CWE
  • Processing a maliciously crafted file may lead to unexpected app termination
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple macOS Affected: 0 , < 14.8.5 (custom)
Affected: 0 , < 15.7.5 (custom)
Affected: 0 , < 26.4 (custom)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
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              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
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              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Processing a maliciously crafted file may lead to unexpected app termination",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-21T00:38:59.996Z",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "url": "https://support.apple.com/en-us/126794"
        },
        {
          "url": "https://support.apple.com/en-us/126795"
        },
        {
          "url": "https://support.apple.com/en-us/126796"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "cveId": "CVE-2026-20679",
    "datePublished": "2026-08-21T00:38:59.996Z",
    "dateReserved": "2025-11-11T14:43:07.872Z",
    "dateUpdated": "2026-08-21T00:38:59.996Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20679",
      "date": "2026-08-21",
      "epss": "0.0015",
      "percentile": "0.04748"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20679\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2026-08-21T01:16:59.830\",\"lastModified\":\"2026-08-21T01:16:59.830\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination.\"}],\"affected\":[{\"source\":\"product-security@apple.com\",\"affectedData\":[{\"vendor\":\"Apple\",\"product\":\"macOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"14.8.5\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"15.7.5\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"26.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://support.apple.com/en-us/126794\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/126795\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/126796\",\"source\":\"product-security@apple.com\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.