CVE-2026-43666
MEDIUM severity · CVSS 6.2 · Out-of-bounds write
6.2CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://support.apple.com/en-us/127110Advisory
- https://support.apple.com/en-us/127111Advisory
- https://support.apple.com/en-us/127115Advisory
- https://support.apple.com/en-us/127116Advisory
- https://support.apple.com/en-us/127117Advisory
- https://support.apple.com/en-us/127118Advisory
- https://support.apple.com/en-us/127119Advisory
- https://support.apple.com/en-us/127120Advisory