Medium severity6.2NVD Advisory· Published May 11, 2026· Updated May 13, 2026
CVE-2026-43666
CVE-2026-43666
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Range: = 15.7.7
- Range: = 18.7.9, = 26.5
- Range: = 18.7.9, = 26.5
Patches
Vulnerability mechanics
References
8- support.apple.com/en-us/127110nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127111nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127115nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127116nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127117nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127118nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127119nvdRelease NotesVendor Advisory
- support.apple.com/en-us/127120nvdRelease NotesVendor Advisory
News mentions
1- Apple Patches Everything, (Mon, May 11th)SANS Internet Storm Center · May 11, 2026