FKIE_CVE-2025-43520

Vulnerability from fkie_nvd - Published: 2025-12-12 21:15 - Updated: 2026-04-03 14:28
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
References
product-security@apple.comhttps://support.apple.com/en-us/125632Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125633Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125634Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125635Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125636Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125637Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125638Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/125639Release Notes, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/Technical Description
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520US Government Resource
Impacted products
Vendor Product Version
apple ipados *
apple ipados 26.0
apple iphone_os *
apple iphone_os 26.0
apple macos *
apple macos *
apple macos 26.0
apple tvos *
apple visionos *
apple watchos *
To clipboard 

{
  "cisaActionDue": "2026-04-03",
  "cisaExploitAdd": "2026-03-20",
  "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Apple Multiple Products Classic Buffer Overflow Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "819E8F86-A336-49A2-853F-249459279A59",
              "versionEndExcluding": "18.7.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:ipados:26.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "4173F942-2CF6-447E-A942-948F6EF6CE77",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7B98B4A6-EFB0-4651-BF56-06917E7CEC85",
              "versionEndExcluding": "18.7.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:26.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "E29A276A-7091-42B2-B893-6A5801A0716E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9827CBDC-8C03-46BA-B534-8533F0975804",
              "versionEndExcluding": "14.8.2",
              "versionStartIncluding": "14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4BE8199E-63D1-496C-B107-52853CFC2311",
              "versionEndExcluding": "15.7.2",
              "versionStartIncluding": "15.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:26.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "551159EE-8311-4A13-802D-85871DAB5E77",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "290E0D29-CB5B-45A7-9FE3-FD2030B1D1A4",
              "versionEndExcluding": "26.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7DFD3616-65CA-4E5C-849C-3C20ACBCB610",
              "versionEndExcluding": "26.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9F9D7F76-13FB-407C-94E5-221B93021568",
              "versionEndExcluding": "26.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory."
    }
  ],
  "id": "CVE-2025-43520",
  "lastModified": "2026-04-03T14:28:03.810",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-12-12T21:15:56.830",
  "references": [
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125632"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125633"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125634"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125635"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125636"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125637"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125638"
    },
    {
      "source": "product-security@apple.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://support.apple.com/en-us/125639"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Technical Description"
      ],
      "url": "https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520"
    }
  ],
  "sourceIdentifier": "product-security@apple.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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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

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.