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A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPa…

cve CVE-2026-43661 1 source, 1 claim · Watch

NVD writes:
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory. the claim
Severity
HIGH NVD
CVSS
7.5 NVD
Fixed in
18.7.10, 26.5, 26.7, 14.8.8, 15.7.8 NVD
Vendor
Apple NVD
Product
iOS and iPadOS NVD
CWE
CWE-121 NVD

How far exploitation has got

  1. No public code known
  2. Proof of concept
  3. Proof of concept, verified
  4. A Metasploit module
  5. Exploited in the wild
  6. Used in ransomware campaigns

Timeline

2026-05-11first spoke of it: A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.NVD

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.

What it is to other things

affectsapple/ipados
NVD
affectsapple/iphone_os
NVD
affectsapple/macos
NVD
affectsapple/tvos
NVD
affectsapple/watchos
NVD
made_byapple
NVD

In words only, so not counted until a person confirms one:

affectsapple/ios_and_ipados
NVD says “Apple · iOS and iPadOS”
Every value, with what each source said and its receipt
PropertySourceSaidMeans here
Automatable
automatable
NVDno
At least one of those steps needs a person.
receipt
Source
NVD
Its words
no
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].automatable
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCno
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "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"
              },
              {
                "lessThan": "26.7",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "product": "macOS",
            "vendor": "Apple",
            "versions": [
              {
                "lessThan": "14.8.8",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThan": "15.7.8",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThan": "26.5",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "product": "tvOS",
            "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"
              }
            ]
          }
        ],
        "source": "product-security@apple.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
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              {
                "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "9D9FC2C4-7A7C-4330-A226-255428A5D18E",
                "versionEndExcluding": "26.5",
                "vulnerable": true
              },
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                "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0A70A5FD-8891-4C4E-9D35-F217F95027B5",
                "versionEndExcluding": "26.5",
                "vulnerable": true
              },
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            "negate": false,
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    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory."
      }
    ],
    "id": "CVE-2026-43661",
    "lastModified": "2026-09-14T21:17:06.590",
    "metrics": {
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        "url": "https://support.apple.com/en-us/127110"
      },
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}
—
CVSS
cvss
NVD7.5
receipt
Source
NVD
Its words
7.5
Read by
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Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "iOS and iPadOS",
            "vendor": "Apple",
            "versions": [
              {
                "lessThan": "18.7.10",
                "status": "affected",
                "version": "0",
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              },
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                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
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                "lessThan": "26.7",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "product": "macOS",
            "vendor": "Apple",
            "versions": [
              {
                "lessThan": "14.8.8",
                "status": "affected",
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                "versionType": "custom"
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                "status": "affected",
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              },
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          },
          {
            "product": "tvOS",
            "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"
              }
            ]
          }
        ],
        "source": "product-security@apple.com"
      }
    ],
    "configurations": [
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—
CVSS vector
cvss_vector
NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
receipt
Source
NVD
Its words
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Read by
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Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "iOS and iPadOS",
            "vendor": "Apple",
            "versions": [
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        ],
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      },
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      },
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      {
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      },
      {
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      },
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      },
      {
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        "url": "https://support.apple.com/en-us/149041"
      }
    ],
    "sourceIdentifier": "product-security@apple.com",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-121"
          }
        ],
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  }
}
—
CWE
cwe
NVDCWE-121
receipt
Source
NVD
Its words
CWE-121
Read by
field:cve.weaknesses[].description[].value
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCCWE-121
2026-09-29 09:45 UTC—
What the source handed over
{
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      {
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          },
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              }
            ]
          },
          {
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              }
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          "exploitabilityScore": 3.9,
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      {
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      },
      {
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      {
        "source": "product-security@apple.com",
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      },
      {
        "source": "product-security@apple.com",
        "url": "https://support.apple.com/en-us/148287"
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      {
        "source": "product-security@apple.com",
        "url": "https://support.apple.com/en-us/149041"
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    ],
    "sourceIdentifier": "product-security@apple.com",
    "vulnStatus": "Modified",
    "weaknesses": [
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            "lang": "en",
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          }
        ],
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  }
}
—
Exploitation
exploitation
NVDnone
No evidence of exploitation, and no public proof of concept.
receipt
Source
NVD
Its words
none
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].exploitation
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCnone
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "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"
              },
              {
                "lessThan": "26.7",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "product": "macOS",
            "vendor": "Apple",
            "versions": [
              {
                "lessThan": "14.8.8",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThan": "15.7.8",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThan": "26.5",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "product": "tvOS",
            "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"
              }
            ]
          }
        ],
        "source": "product-security@apple.com"
      }
    ],
    "configurations": [
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              },
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        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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      }
    ],
    "sourceIdentifier": "product-security@apple.com",
    "vulnStatus": "Modified",
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          }
        ],
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        "type": "Secondary"
      }
    ]
  }
}
—
Fixed in
fixed_in
NVD18.7.10, 26.5, 26.7, 14.8.8, 15.7.8
receipt
Source
NVD
Its words
18.7.10, 26.5, 26.7, 14.8.8, 15.7.8
Read by
field:cve.affected[].affectedData[].versions[status=affected].lessThan
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTC18.7.10, 26.5, 26.7, 14.8.8, 15.7.8
2026-09-29 09:45 UTC—
What the source handed over
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      {
        "affectedData": [
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            "vendor": "Apple",
            "versions": [
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                "lessThan": "18.7.10",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
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                "version": "0",
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              },
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              }
            ]
          },
          {
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              },
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              }
            ]
          },
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                "status": "affected",
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              }
            ]
          },
          {
            "product": "watchOS",
            "vendor": "Apple",
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              {
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              }
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          }
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}
—
Product
product
NVDiOS and iPadOS
receipt
Source
NVD
Its words
iOS and iPadOS
Read by
field:cve.affected[].affectedData[].product
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCiOS and iPadOS
2026-09-29 09:45 UTC—
What the source handed over
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              },
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          },
          {
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              }
            ]
          },
          {
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              {
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    "sourceIdentifier": "product-security@apple.com",
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}
—
Severity
severity
NVDHIGH
From 7.0 to 8.9.
receipt
Source
NVD
Its words
HIGH
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCHIGH
2026-09-29 09:45 UTC—
What the source handed over
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      {
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            "vendor": "Apple",
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              }
            ]
          },
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high
Status
status
NVDModified
receipt
Source
NVD
Its words
Modified
Read by
field:cve.vulnStatus
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
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      }
    ],
    "sourceIdentifier": "product-security@apple.com",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
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          {
            "lang": "en",
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          }
        ],
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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      }
    ]
  }
}
—
Technical impact
technical_impact
NVDpartial
The attacker gains limited control, or limited information.
receipt
Source
NVD
Its words
partial
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].technicalImpact
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCpartial
2026-09-29 09:45 UTC—
What the source handed over
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}
—
Vendor
vendor
NVDApple
receipt
Source
NVD
Its words
Apple
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCApple
2026-09-29 09:45 UTC—
What the source handed over
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                "version": "0",
                "versionType": "custom"
              },
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              }
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              }
            ]
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        "type": "Secondary"
      }
    ]
  }
}
—
Every claim, by kind

vulnerability

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.
zetlyn/cve-nvd · 2026-05-11
automatable no cvss 7.5 cvss_vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H cwe CWE-121 exploitation none fixed_in 18.7.10, 26.5, 26.7, 14.8.8, 15.7.8 product iOS and iPadOS severity HIGH status Modified technical_impact partial vendor Apple source