CVE-2026-43679: Input Validation

Published Mar 24, 2026
·
Updated

802.1X. An authentication issue was addressed with improved state management.

Other sources

Accounts. An authorization issue was addressed with improved state management.

— Apple

Audio. A type confusion issue was addressed with improved memory handling.

— Apple

Audio. A use-after-free issue was addressed with improved memory management.

— Apple

CoreMedia. An out-of-bounds access issue was addressed with improved bounds checking.

— Apple

CoreUtils. A null pointer dereference was addressed with improved input validation.

— Apple

Credit

Rosyna Keller(Totally Not Malicious Software), Justin Cohen(Google), Jex Amro, Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), Etienne Charron (Renault), Victoria Martini (Renault), Zhongcheng Li(IES Red Team), CVE-2025-14524, Dalibor Milanovic, XiguaSec, CVE-2025-64505, Gor Aleksanyan(BoB 0xB6), Dhiyanesh Selvaraj@@redroot97(BoB 0xB6), 이동하 (Lee Dong Ha(BoB 0xB6), Jian Lee@@speedyfriend433, DARKNAVY@@DarkNavyOrg, Johnny Franks@@0xjohnny, Ilya Andr (andrd3v)(RTU MIREA), Ilias Morad (A2nkF)(Voynich Group), Duy Trần@@khanhduytran0, @@hugeBlack, Dave G., Gongyu Ma@@Mezone0, Alex Radocea, an anonymous researcher, Caspian Tarafdar, webb, greenbynox, Arni Hardarson, Héloïse Gollier, Mathy Vanhoef (KU Leuven)

Affected Software

3 affected componentsFixes available
Apple WatchOS<26.4
Apple WatchOS<26.4
26.4
Apple WatchOS<26.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.4
  2. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 26.4

Event History

Mar 24, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Aug 21, 2026
CVE Published
via MITRE·12:39 AM
Data Sourced
via MITRE·12:39 AM
DescriptionWeakness
Data Sourced
via NVD·01:17 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What level of access does an attacker need to exploit this issue?

The attacker needs physical access to a locked Apple Watch.

2

What information could be exposed?

An attacker may be able to view the user's contacts.

3

Which update fixes the issue?

Apple states that the issue is fixed in watchOS 26.4.

Company

Resources

Contact

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