CVE-2026-43667 (GCVE-0-2026-43667)

Vulnerability from cvelistv5 – Published: 2026-08-17 21:29 – Updated: 2026-08-25 19:24
VLAI
Summary
A reachable assertion was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to cause a denial-of-service.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 13:14 UTC
CWE
  • An attacker in a privileged network position may be able to cause a denial-of-service
  • CWE-617 - Reachable Assertion
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple iOS and iPadOS Affected: 0 , < 18.7.10 (custom)
Affected: 0 , < 26.5 (custom)
guessed Create a notification for this product.
Apple macOS Affected: 0 , < 26.5 (custom)
guessed Create a notification for this product.
Apple visionOS Affected: 0 , < 26.5 (custom)
guessed Create a notification for this product.
Apple watchOS Affected: 0 , < 26.5 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 6.5,
              "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:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-43667",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T13:14:40.453823Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-617",
                "description": "CWE-617 Reachable Assertion",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-18T13:23:05.910Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "iOS and iPadOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "18.7.10",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "26.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "visionOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "watchOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A reachable assertion was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to cause a denial-of-service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "An attacker in a privileged network position may be able to cause a denial-of-service",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-25T19:24:49.206Z",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "url": "https://support.apple.com/en-us/127110"
        },
        {
          "url": "https://support.apple.com/en-us/127115"
        },
        {
          "url": "https://support.apple.com/en-us/127119"
        },
        {
          "url": "https://support.apple.com/en-us/127120"
        },
        {
          "url": "https://support.apple.com/en-us/148287"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "cveId": "CVE-2026-43667",
    "datePublished": "2026-08-17T21:29:35.370Z",
    "dateReserved": "2026-05-01T22:46:21.640Z",
    "dateUpdated": "2026-08-25T19:24:49.206Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43667",
      "date": "2026-08-31",
      "epss": "0.00333",
      "percentile": "0.25965"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43667\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2026-08-17T22:17:06.420\",\"lastModified\":\"2026-08-25T20:16:55.417\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A reachable assertion was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to cause a denial-of-service.\"}],\"affected\":[{\"source\":\"product-security@apple.com\",\"affectedData\":[{\"vendor\":\"Apple\",\"product\":\"iOS and iPadOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"18.7.10\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"26.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"macOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"visionOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"watchOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.5\",\"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:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-18T13:14:40.453823Z\",\"id\":\"CVE-2026-43667\",\"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-617\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"18.7.10\",\"matchCriteriaId\":\"F413C997-517E-4C4F-9506-B7295E94CFFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"18.7.10\",\"matchCriteriaId\":\"23D4A4CC-51AE-44CA-A211-5B1A7445E45B\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/127110\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/127115\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/127119\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/127120\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/148287\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-43667\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-18T13:14:40.453823Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-617\", \"description\": \"CWE-617 Reachable Assertion\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-18T13:14:38.035Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"Apple\", \"product\": \"iOS and iPadOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"18.7.10\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.5\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.5\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"visionOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.5\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"watchOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.5\", \"versionType\": \"custom\"}]}], \"references\": [{\"url\": \"https://support.apple.com/en-us/127110\"}, {\"url\": \"https://support.apple.com/en-us/127115\"}, {\"url\": \"https://support.apple.com/en-us/127119\"}, {\"url\": \"https://support.apple.com/en-us/127120\"}, {\"url\": \"https://support.apple.com/en-us/148287\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A reachable assertion was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to cause a denial-of-service.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"An attacker in a privileged network position may be able to cause a denial-of-service\"}]}], \"providerMetadata\": {\"orgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"shortName\": \"apple\", \"dateUpdated\": \"2026-08-25T19:24:49.206Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-43667\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-25T19:24:49.206Z\", \"dateReserved\": \"2026-05-01T22:46:21.640Z\", \"assignerOrgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"datePublished\": \"2026-08-17T21:29:35.370Z\", \"assignerShortName\": \"apple\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

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.