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CVE-2026-43724

Published: Jun 29, 2026Updated: Jun 30, 2026 Sources: CVE List NVDCWE-20
7.8HIGH
NVD MITRE
EPSS Score
0.2%
Top 92.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

The issue was addressed with improved input sanitization. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. An app may be able to cause unexpected system termination or write kernel memory.

In plain language

AI Low urgency

This is a security fix for iPhone, iPad, and Mac: a bad input handling problem that could let an app crash your device or, more seriously, affect sensitive system memory—so you should update to the fixed iOS/iPadOS/macOS versions if you can.

Executive summary

CVE-2026-43724 is a fixed input-sanitization flaw that could allow an app to trigger unexpected system termination and potentially write kernel memory on iOS/iPadOS/macOS; fixed in iOS 26.5.2 and iPadOS 26.5.2 and macOS Tahoe 26.5.2.

If affected, business impact
Unexpected device or app crashesPossible compromise of system memoryOperational disruption from downtime

What to do now

  1. Check whether your iPhone/iPad is updated beyond iOS/iPadOS 26.5.2 and whether your Mac is updated beyond macOS Tahoe 26.5.2.
  2. If any devices are on older versions, update them to iOS 26.5.2 or iPadOS 26.5.2 (for Apple mobile devices) and macOS Tahoe 26.5.2 (for Macs).
  3. After updating, confirm normal app/device stability and report any persistent crashes to your IT/vendor support team.
Usually a quick update

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

Apple
commercial·USaka apple inc., apple computer
iOS and iPadOSEmbeddedOS
Operating Systems / mobile-os
macOSOn-premOS
Operating Systems / unix-bsd
ipadosEmbeddedOS
Operating Systems / mobile-os
and 2 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-43724?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://support.apple.com/en-us/127594
support.apple.com
https://support.apple.com/en-us/127595
support.apple.com
News mentions
2

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