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Apple iOS/iPadOS/macOS EUVD-2026-29302

| CVE-2026-43656 HIGH
Out-of-bounds Write (CWE-787)
2026-05-11 apple GHSA-xfh5-8vfh-9mjc
7.3
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

5
Analysis Generated
May 12, 2026 - 18:25 vuln.today
CVSS changed
May 12, 2026 - 18:22 NVD
7.3 (HIGH)
Patch available
May 11, 2026 - 22:18 EUVD
CVE Published
May 11, 2026 - 20:08 nvd
UNKNOWN (no severity yet)
CVE Published
May 11, 2026 - 20:08 nvd
HIGH 7.3

DescriptionNVD

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Parsing a maliciously crafted file may lead to an unexpected app termination.

AnalysisAI

Out-of-bounds write in Apple's file parsing component across iOS, iPadOS, and macOS enables remote code execution or denial of service via maliciously crafted files with no user interaction required. Exploitation probability is extremely low (EPSS 0.02%, 6th percentile) with no public exploit identified at time of analysis, despite the critical CVSS 7.3 score and network-based attack vector. …

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RemediationAI

Within 24 hours: Inventory all Apple devices across iOS, iPadOS, and macOS platforms in your environment and verify current OS versions. Within 7 days: Deploy patches to all systems-iOS/iPadOS to version 18.7.9 or 26.5; macOS Sonoma to 14.8.7; Sequoia to 15.7.7; Tahoe to 26.5. …

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EUVD-2026-29302 vulnerability details – vuln.today

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