CVE-2026-43776 - Vulnerability Details - OpenCVE

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Apple

iOS and iPadOS

affected

Version	Status	Constraints
`0`	affected	< 26.6

Apple

macOS

affected

Version	Status	Constraints
`0`	affected	< 15.7.8
`0`	affected	< 26.6

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128071

History

Mon, 27 Jul 2026 23:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-120
Metrics		cvssV3_1 `{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Mon, 27 Jul 2026 20:30:00 +0000

Type	Values Removed	Values Added
Description		A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.
References		https://support.apple.com/en-us/128066 https://support.apple.com/en-us/128067 https://support.apple.com/en-us/128071

Projects

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MITRE

Status: PUBLISHED

Assigner: apple

Published: 2026-07-27T20:14:34.942Z

Updated: 2026-07-27T21:04:21.487Z

Reserved: 2026-05-01T22:46:27.818Z

Link: CVE-2026-43776

Vulnrichment

Updated: 2026-07-27T21:04:14.694Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120

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