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Apple OS CVE-2026-43655

| EUVD-2026-29301 HIGH
Out-of-bounds Read (CWE-125)
2026-05-11 apple GHSA-6wgp-q874-jmmx
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 - 18:24 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 read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. An app may be able to cause unexpected system termination or read kernel memory.

AnalysisAI

Out-of-bounds read in Apple operating systems allows malicious applications to crash the system or leak kernel memory across iOS/iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, and watchOS 26.5. The vulnerability requires local application execution but no user interaction, enabling information disclosure and denial-of-service attacks. …

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RemediationAI

Within 24 hours: Inventory all Apple devices running iOS/iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, and watchOS 26.5 in your environment. Within 7 days: Deploy vendor-released patches to all affected systems across these four operating system families. …

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CVE-2026-43655 vulnerability details – vuln.today

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