CVE-2026-84636: Race Condition

Published Sep 14, 2026
·
Updated

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

Other sources

Accessibility. A privacy issue was addressed with improved handling of user preferences.

— Apple

Accessibility. This issue was addressed with improved data protection.

— Apple

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

— Apple

An authorization issue was addressed with improved state management. This issue is fixed in iOS 27 and iPadOS 27, tvOS 27, visionOS 27, watchOS 27. An app may be able to access sensitive user data.

— NVD

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

— Apple

Credit

Peter Malone, Arni Hardarson (Neonix Security), Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), CJ Vana, David Strnadel, Daniel Febrero, Asaf Cohen, Gongyu Ma@@Mezone0, Jian Lee@@speedyfriend433, Cem Onat Karagun, an anonymous researcher, Zhongcheng Li (CK01), Prashan Samarathunge, Franco Belman at Blackwing Intelligence, Mustafa Calap@@ordinal0, dbg.re), Meta Red Team X - Nik Tsytsarkin, Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Anthropic Research, Ruslan Dautov, CVE-2026-65414, jioundai, Stanislav Jelezoglo, Heiner Gerdes, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Dawuge(Shuffle Team), Chris Bailey - Short Circuit, Meta Product Security, Stuart Wallace, Pavan Nallamothu, ret2happy, stratan@@5tratan, Rahul Raj, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Nik Tsytsarkin, Bruce Dang(Calif), Tommy DeVoss@@thedawgyg(Braze Security Team), Jiyong Yang, Vishal Patidar, Roman Zabicki, Justin O'Leary@@olearysec(olearysec), Geonha Lee@@leegn4a, Chanwit Muenprakoddee (ChemIndy), f00l@@PPPF00L, 3ndy1@@_3ndy1, Minghao Lin@@Y1nkoc, 云散花折, Arjanit Isufi, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, hxr1, Seiji Sakurai@@HeapSmasher, genter0(Calif), Svetoslav Stolarov(Calif), Josh Maine(Calif), Dun, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Ryan Hileman via Xint Code (xint.io), Drinor Selmanaj (Sentry), Surya Narayan Kushwaha, Bhaswanth Chigurupati, Tristan Madani@@TristanInSec(Talence Security), Ye Zhang@@VAR10CK(Baidu Security), Hiroki Imai (LAC Co., Ltd.), R4mbb(KRsecurity), Vladislav Shevchenko (Positive Technologies), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Ashish Kunwar(Positive Technologies), Mikhail Lozhnikov(Positive Technologies), Bhaswanth Chigurupati(STAR Labs SG Pte), OpenAI, Hüseyin Kabasakal@@HuseyinK01, Kitten Food, Myeonghun Pak, Nathaniel Oh@@calysteon, Alan Banderas@@creeper4004, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Hoffcona(IES Red Team), Issa Sancho, Ilya Andr (andrd3v)(Positive Technologies), Dhiyanesh Selvaraj@@redroot97, Narendra Singh@@_3P1C, John Lussier, Filip Olszak, Owen Pawling@@owenpawling, Gongyu Ma (twitter@@Mezone0, YingMuo@@YingMuo(DEVCORE Research Team), Sindre Sorhus, Constantin Clerc(Calif), Shad J(Calif), huami1314@@huamidev(Calif), Huy Nguyen@@34306(Calif), Zeyang Li&Yuxiang Wang(Chongqing Telecom), Souta Sugiyama, Henock Habte, Viggo Lekdorf, Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), 杉山 壮太, Shubham Chaskar, Dung Do@@_piers2(Calif), Junhyuk Im(S2W Inc), Seungyun Lee(S2W Inc), Mohit Negi, Myungyong Lee, Kwak Kiyong@@Pwnkai23, Song Nuri, Jakob Pammer, Drin Raci(sentry), Niels Hofmans, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), Abodi Dawoud, tamdao, Richard Zana, Alexandre Borges, Ilya Andr (andrd3v), Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Yongdae Kim @ SysSec, KAIST, Beomseok Oh@@KAIST, Yongdae Kim@@KAIST, Sindre Sorhus(Positive Technologies), Mathis Mansière, Siyeong kim, AL Najafi, flower xu, Adriatik Raci, PETOWORKS의 Bugeun Choi@@Bugeun, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Hyunwoo Kim@@v4bel, Junyeong Lee (jylab.github.io), Merrick Hare, Aditya Kumar, John Nzyuko Uvyu, Geoffrey Lovelace, Luke Symons, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Csaba Fitzl@@theevilbit(Iru), Bernhard Jackiewicz, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Morris Richman@@morrisinlife, Tristan Brennan, Matthew Zamat, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Yiğit Can YILMAZ@@yilmazcanyigit, Hongsik Kim (mnur), Bálint Magyar (balintmagyar.com), Meshaal@@unrealmesh, Abodi Dawoud(van Dijk), Merrick Hare(van Dijk), Roel(van Dijk), Jonghoon Han (Aegis)(Shuffle Team), bubu(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Armend Gashi, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Lehan Dilusha Jayasingha, Jérôme Djouder, Seung Je Seong(Positive Technologies), Kirin@@Pwnrin, Bedran Karakoc(Ruhr University Bochum), Tobias Funke(Ruhr University Bochum), Jacopo Clark(Ruhr University Bochum), Katharina Kohls(Ruhr University Bochum), Aaron Schlitt@@aaron_sfn(Hasso Plattner Institute), Cybersecurity - Mobile & Wireless, Jacob Prezant (prezant.us), Tomi Garcia (archyxsec), Kwak Kiyong / kakaogames, OGINOME Tomohito, Yusuf Kelany, OSORI, Janggoon Lee(Out of Bounds), OpenAI Codex Security - Amy Burnett, wwwlk, Charles Kern, Seonwook Kim, lattice, Josef Korbel, Thomas Guillem, Josef Korbel (Citadelo), Kun Peeks@@SwayZGl1tZyyy

Affected Software

10 affected componentsFixes available
Apple tvOS<27
27
Apple WatchOS<27
27
Apple iOS<27
27
Apple iPadOS<27
27
Apple visionOS<27
27
Apple iPadOS<27.0
Apple iPhone OS<27.0
Apple tvOS<27.0
Apple visionOS<27.0
Apple WatchOS<27.0

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 27
  2. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 27
  3. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 27
  4. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 27
  5. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 27
  6. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 27

Event History

Sep 14, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·08:50 PM
Data Sourced
via MITRE·08:50 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What access does an attacker need to exploit this issue?

The CVSS vector indicates local access and low privileges are required. No user interaction is required.

2

Which systems should be prioritized for updates?

Prioritize Apple devices running iOS, iPadOS, tvOS, visionOS, or watchOS that have not yet been updated to the releases containing the fix. The issue is fixed in iOS 27, iPadOS 27, tvOS 27, visionOS 27, and watchOS 27.

3

What is the expected security impact?

A vulnerable app may be able to access sensitive user data. The CVSS vector indicates high confidentiality impact, with no integrity or availability impact stated.

Company

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