CVE-2026-43666

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43666
An out-of-bounds write issue was addressed with improved bounds checking. 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, tvOS 26.5, visionOS 26.5, watchOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

6.2 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://support.apple.com/en-us/127110 Release Notes Vendor Advisory
https://support.apple.com/en-us/127111 Release Notes Vendor Advisory
https://support.apple.com/en-us/127115 Release Notes Vendor Advisory
https://support.apple.com/en-us/127116 Release Notes Vendor Advisory
https://support.apple.com/en-us/127117 Release Notes Vendor Advisory
https://support.apple.com/en-us/127118 Release Notes Vendor Advisory
https://support.apple.com/en-us/127119 Release Notes Vendor Advisory
https://support.apple.com/en-us/127120 Release Notes Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
History

13 May 2026, 14:06

Type Values Removed Values Added
CPE cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
First Time Apple iphone Os
Apple tvos
Apple visionos
Apple watchos
Apple
Apple macos
Apple ipados
References () https://support.apple.com/en-us/127110 - () https://support.apple.com/en-us/127110 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127111 - () https://support.apple.com/en-us/127111 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127115 - () https://support.apple.com/en-us/127115 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127116 - () https://support.apple.com/en-us/127116 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127117 - () https://support.apple.com/en-us/127117 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127118 - () https://support.apple.com/en-us/127118 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127119 - () https://support.apple.com/en-us/127119 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/127120 - () https://support.apple.com/en-us/127120 - Release Notes, Vendor Advisory

12 May 2026, 18:17

Type Values Removed Values Added
CWE CWE-787
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.2

11 May 2026, 21:19

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-11 21:19

Updated : 2026-05-13 14:06

NVD link : CVE-2026-43666

Mitre link : CVE-2026-43666

CVE.ORG link : CVE-2026-43666

JSON object : View

Products Affected

apple

  • ipados
  • tvos
  • watchos
  • visionos
  • macos
  • iphone_os
CWE
CWE-787

Out-of-bounds Write