CVE-2026-43653

Local Network Denial-of-Service via Improper Memory Handling in Apple OS

Published May 11, 2026 CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Local Network Denial-of-Service via Improper Memory Handling in Apple OS
Type Values Removed Values Added
Title Denial of Service via Improper Memory Handling in Apple Operating Systems
Type Values Removed Values Added
Description The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service. The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.
References
Type Values Removed Values Added
First Time appeared Apple ipados
Apple iphone Os
CPEs cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
Vendors & Products Apple ipados
Apple iphone Os
Type Values Removed Values Added
Title Denial of Service via Improper Memory Handling in Apple Operating Systems
Type Values Removed Values Added
Title Apple OS Local Network Memory Handling Bug Causing Denial of Service
Weaknesses CWE-125
CWE-787
Type Values Removed Values Added
Weaknesses CWE-400
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Apple tvos
Vendors & Products Apple
Apple ios And Ipados
Apple macos
Apple tvos
Type Values Removed Values Added
Title Apple OS Local Network Memory Handling Bug Causing Denial of Service
Weaknesses CWE-125
CWE-787
Type Values Removed Values Added
Description The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Jul 27, 2026, 8:15 PM
Reserved
May 1, 2026, 10:46 PM
Status
Modified
Published
May 11, 2026, 9:19 PM
Modified
Oct 26, 2026, 6:10 PM