Vulnerability-Lookup

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

Vulnerability from cvelistv5 – Published: 2026-08-21 00:38 – Updated: 2026-08-21 19:48

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

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 19:48 UTC

CWE

Processing a maliciously crafted file may lead to unexpected app termination
CWE-125 - Out-of-bounds Read
CWE-416 - Use After Free

Assigner

apple mitre root

References

3 references

URL	Tags
https://support.apple.com/en-us/126794
https://support.apple.com/en-us/126795
https://support.apple.com/en-us/126796

Impacted products

1 product

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

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-20679",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T19:48:39.427347Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          },
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-21T19:48:44.209Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "14.8.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "15.7.5",
              "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": "2026-08-21T19:48:44.209Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20679",
      "date": "2026-09-02",
      "epss": "0.00211",
      "percentile": "0.11322"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20679\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2026-08-21T01:16:59.830\",\"lastModified\":\"2026-08-24T17:11:05.683\",\"vulnStatus\":\"Analyzed\",\"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\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-21T19:48:39.427347Z\",\"id\":\"CVE-2026-20679\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"},{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"14.0\",\"versionEndExcluding\":\"14.8.5\",\"matchCriteriaId\":\"D66288AF-23BD-407A-81F5-F1DFBF84C622\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"15.0\",\"versionEndExcluding\":\"15.7.5\",\"matchCriteriaId\":\"DD21D2C9-BBEC-4E8E-B8D2-C92B7E6155E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"26.0\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"6CF848CD-25D4-4371-BEF3-1ACCE47AD81F\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/126794\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/126795\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/126796\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"Processing a maliciously crafted file may lead to unexpected app termination\"}]}], \"affected\": [{\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"version\": \"0\", \"status\": \"affected\", \"lessThan\": \"14.8.5\", \"versionType\": \"custom\"}, {\"version\": \"0\", \"status\": \"affected\", \"lessThan\": \"15.7.5\", \"versionType\": \"custom\"}, {\"version\": \"0\", \"status\": \"affected\", \"lessThan\": \"26.4\", \"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.\"}], \"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\"}], \"providerMetadata\": {\"orgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"shortName\": \"apple\", \"dateUpdated\": \"2026-08-21T00:38:59.996Z\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20679\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-21T19:48:39.427347Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125 Out-of-bounds Read\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-21T19:48:13.480Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20679\", \"assignerOrgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"apple\", \"dateReserved\": \"2025-11-11T14:43:07.872Z\", \"datePublished\": \"2026-08-21T00:38:59.996Z\", \"dateUpdated\": \"2026-08-21T19:48:44.209Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-20679

Vulnerability from fkie_nvd - Published: 2026-08-21 01:16 - Updated: 2026-08-24 17:11

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Summary

References

URL	Tags
product-security@apple.com	https://support.apple.com/en-us/126794	Release Notes, Vendor Advisory
product-security@apple.com	https://support.apple.com/en-us/126795	Release Notes, Vendor Advisory
product-security@apple.com	https://support.apple.com/en-us/126796	Release Notes, Vendor Advisory

Impacted products

Vendor	Product	Version
apple	macos	*
apple	macos	*
apple	macos	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "14.8.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "15.7.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "product-security@apple.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D66288AF-23BD-407A-81F5-F1DFBF84C622",
              "versionEndExcluding": "14.8.5",
              "versionStartIncluding": "14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DD21D2C9-BBEC-4E8E-B8D2-C92B7E6155E1",
              "versionEndExcluding": "15.7.5",
              "versionStartIncluding": "15.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6CF848CD-25D4-4371-BEF3-1ACCE47AD81F",
              "versionEndExcluding": "26.4",
              "versionStartIncluding": "26.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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."
    }
  ],
  "id": "CVE-2026-20679",
  "lastModified": "2026-08-24T17:11:05.683",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20679",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-21T19:48:39.427347Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-21T01:16:59.830",
  "references": [
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/126794"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/126795"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/126796"
    }
  ],
  "sourceIdentifier": "product-security@apple.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-P6HG-HPQV-CP2W

Vulnerability from github – Published: 2026-08-21 03:31 – Updated: 2026-08-21 21:31

Details

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20679"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-21T01:16:59Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-p6hg-hpqv-cp2w",
  "modified": "2026-08-21T21:31:48Z",
  "published": "2026-08-21T03:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20679"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/126794"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/126795"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/126796"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

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

FKIE_CVE-2026-20679

GHSA-P6HG-HPQV-CP2W

Tags

Sightings

Nomenclature