CVE-2026-43666

An out-of-bounds write issue was addressed with improved bounds checking

Medium · published May 11, 2026

CVSS v3.1
6.2
EPSS
0%
Percentile
7.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.2 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00180 · 7.2th percentile
Published
2026-05-11T20:07Z
EPSS history
Timeline
  • 11 MAY 20:07Z
    An out-of-bounds write issue was addressed with improved bounds checking
    cvelistv5