CVE-2026-84634: Race Condition

Published Sep 14, 2026
·
Updated

A race condition was addressed with additional validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. An app may be able to cause unexpected system termination or write kernel memory.

Other sources

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

— Apple

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

Accounts. This issue was addressed with additional entitlement checks.

— Apple

Credit

Peter Malone, Arni Hardarson (Neonix Security), Cem Onat Karagun, an anonymous researcher, Zhongcheng Li (CK01), Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), Johan Wahyudi, S. Rosario, tamdao, Franco Belman at Blackwing Intelligence, Mustafa Calap@@ordinal0, dbg.re), Meta Red Team X - Nik Tsytsarkin, Ilya Andr (andrd3v), Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Anthropic Research, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), CVE-2026-65414, jioundai, Stanislav Jelezoglo, Heiner Gerdes, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Jihwan Yoon, Mathis Mansière, Duc Anh Nguyen & Ta Duc Thien, Nik Tsytsarkin, Chris Bailey - Short Circuit, Siyeong kim, Meta Product Security, AL Najafi, Pavan Nallamothu, ret2happy, stratan@@5tratan, Rahul Raj, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Junyeong Lee (jylab.github.io), Merrick Hare, Aditya Kumar, John Nzyuko Uvyu, Narendra Singh@@_3P1C, Geoffrey Lovelace, Bruce Dang(Calif), Tommy DeVoss@@thedawgyg(Braze Security Team), Jiyong Yang, He Wei (ギカク), Justin O'Leary@@olearysec(olearysec), Geonha Lee@@leegn4a, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Chanwit Muenprakoddee (ChemIndy), f00l@@PPPF00L, 3ndy1@@_3ndy1, Minghao Lin@@Y1nkoc, 云散花折, Arjanit Isufi, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, David Strnadel, 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), Hiroki Imai (LAC Co., Ltd.), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), 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), OpenAI, Hüseyin Kabasakal@@HuseyinK01, Kitten Food, Sindre Sorhus, Morris Richman@@morrisinlife, Stuart Wallace, Tristan Brennan, Myeonghun Pak, Nathaniel Oh@@calysteon, Alan Banderas@@creeper4004, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Yiğit Can YILMAZ@@yilmazcanyigit, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Hoffcona(IES Red Team), Piotr Jerzy Duszynski(MurphySec), f0r(MurphySec), PETOWORKS의 Bugeun Choi@@Bugeun, ธนกฤต ทัฬหะ, Hongsik Kim (mnur), Issa Sancho, Ilya Andr (andrd3v)(Positive Technologies), CJ Vana, Gongyu Ma@@Mezone0, Dhiyanesh Selvaraj@@redroot97, Roman Zabicki, John Lussier, Filip Olszak, Abodi Dawoud(van Dijk), Merrick Hare(van Dijk), Roel(van Dijk), Owen Pawling@@owenpawling, OSORI, Jonghoon Han (Aegis)(Shuffle Team), bubu(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), Dawuge(Shuffle Team), YingMuo@@YingMuo(DEVCORE Research Team), Lehan Dilusha Jayasingha, Zeyang Li&Yuxiang Wang(Chongqing Telecom), Janggoon Lee(Out of Bounds), OpenAI Codex Security - Amy Burnett, Souta Sugiyama, wwwlk, Henock Habte, Charles Kern, Seonwook Kim, Shubham Chaskar, lattice, Josef Korbel, Viggo Lekdorf, Thomas Guillem, Niels Hofmans, Josef Korbel (Citadelo), Kun Peeks@@SwayZGl1tZyyy, Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), 杉山 壮太, Dung Do@@_piers2(Calif), Tomi Garcia (archyxsec), Kwak Kiyong / kakaogames, Junhyuk Im(S2W Inc), Seungyun Lee(S2W Inc), OGINOME Tomohito, Mohit Negi, Myungyong Lee, Kwak Kiyong@@Pwnkai23, Song Nuri, Efstratios Kaplanellis@@5tratan(Almamater Technologies), Jakob Pammer, Drin Raci(sentry), Jian Lee@@speedyfriend433, Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Daniel Febrero, Asaf Cohen, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Abodi Dawoud, Richard Zana, Alexandre Borges, Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Yongdae Kim @ SysSec, KAIST, Beomseok Oh@@KAIST, Yongdae Kim@@KAIST, Sindre Sorhus(Positive Technologies), flower xu, Adriatik Raci, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Hyunwoo Kim@@v4bel, Vishal Patidar, Luke Symons, Eddy Tsalolikhin, Johann Rehberger, Musaab Khan@@bxff(Tencent Xuanwu Lab), XlabAI Team(Tencent Xuanwu Lab), Atuin Automated Vulnerability Discovery Engine, Guannan Wang, Zhanpeng Liu, Jiashuo Liang, Guancheng Li, Iain Harkiss, Csaba Fitzl@@theevilbit(Iru), Bernhard Jackiewicz, Wang Yu, CVE-2019-5598, Matthew Zamat, Bálint Magyar (balintmagyar.com), Meshaal@@unrealmesh, Gergely Kalman@@gergely_kalman, Gongyu Ma (twitter@@Mezone0, Jagannath Mohanty, Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Armend Gashi, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Jérôme Djouder, Seung Je Seong(Positive Technologies), Kirin@@Pwnrin, Constantin Clerc(Calif), Shad J(Calif), huami1314@@huamidev(Calif), Huy Nguyen@@34306(Calif), Bedran Karakoc(Ruhr University Bochum), Tobias Funke(Ruhr University Bochum), Jacopo Clark(Ruhr University Bochum), Katharina Kohls(Ruhr University Bochum), Mohamad Dawoud, Aaron Schlitt@@aaron_sfn(Hasso Plattner Institute), Cybersecurity - Mobile & Wireless, Jacob Prezant (prezant.us), Yusuf Kelany, LiangWei, Dave G., Prashan Samarathunge, Nick Cook, Sentry Flag, Mickey Jin@@patch1t, D4rthL, Ahmed Alwardani, Mohamad Dawoud / Abodi Dawoud, Mr.Gedik@@h4ck2s3c, Mr.Gedik@@h4ck2s3c(Turkish Technology), Oren Yomtov, Marc Newlin(SkySafe), Murray Mike(Nosebeard Labs), zenith, Sanny Mitra(Cystack), Sihyun Roh (Compsec(Cystack), SNU)(Cystack), ngockhanh(Cystack), Ataberk Yavuzer, 정우 하@@0xfa11babe, Surej Sekhar, Suresh Sundaram, Hari Shanmugam (The Hxr1), Ryan Hughes, Kujtim Kryeziu (Sentry), Yongyue WANG AKA Brian.W(OKX security), Omar Cerrito, Юлия Мерцалова, Aaron Grattafiori - NVIDIA AI Red Team, Joseph Shamoon, Meshaal @ Darkcov, 章鱼哥 (aipyaipy.com）@@aipy, 章鱼哥 （aipyaipy.com）@@aipy, instantraaamen (github.com/instantraaamen) Contact: masa.shiramizu.com@@gmail, 章鱼哥 (aipyaipy.com)@@aipy, Jurre van Bergen - Threatnotify, Redon Gashi (Sentry), Thiago Mayllart, Manish Bhatt, Amazon Leo Security, oxsignal, Yurii Bakurov, Ron Masas(BreakPoint), Andrey Chernykh, Anand (anandsreekumar.com), Redon Gashi(Sentry), Feng Xue(ThreatBook), XGPT(ThreatBook), Alfredo Pesoli@@__rev(Bynar), Jonathan Bar Or@@yo_yo_yo_jbo, Arni Hardarson (Neonix Security)(Talence Security), 정우 하, Aswin Kumar Gokulakannan, Meta Red Team X, James Young, genter0, James Duffy@@0x4A616D657344, Abhijeet Singh (www.linkedin.com/in/abhiunix/), Stuart Thomas, Mohamed Wedatalla, Adrián Díaz Aguilar, HvxyZLF, Shuiliang Xie, Dave G.(supernetworks), Alex Radocea(supernetworks), Mustafa Ahmed, Dmytro Merkulov, silo, Tristan Madani (Talence Security), Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, Kieran Klukas (taciturnaxolotl), Liu Xue & 九宫格(Chongqing Telecom), @@08Tc3wBB(Jamf), Prathamesh Walunj(Iru), Ahmad Al Harrizuan Izadin, Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, Anon Tuttu Venus, Stefan Esser (Calif), Jaeho Nam(SNU CSE MMLAB), Jungbum Lee(SNU CSE MMLAB), Sangwi Kang(SNU CSE MMLAB), Hyeonguk Ko(SNU CSE MMLAB), Taekyoung Kwon(SNU CSE MMLAB), Pranav Gopalkrishnan, Alan Wang, Ailsa Sun, Hovav Shacham, Riccardo Paccagnella, Chris Fletcher, David Kohlbrenner, Ricardo Prado, Abodi Dawoud(Best Buddy Apps), Guilherme Rambo(Best Buddy Apps), Jakob Pammer(Calif), 재영 정(Calif), 재영 정(ThreatBook), Jay Patel, 재영 정, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), 糖豆爸爸(@晴天组织), Robert Mindo, Paul Montgomery@@nullevent, Meridian Miftari, Amy (amys.website), Zhongquan Li@@Guluisacat, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), deepsec@@DarkNavyOrg(DARKNAVY), Rohit Chatterjee, Lance Cain - Senior Consultant at SpecterOps Inc., an anonymous researcher(Iru), Rodolphe Brunetti@@eisw0lf(Iru), Ryan Dowd@@_rdowd(Iru), Isaiah Ryan Ehlert (isaiahehlert.com)@@icloud(Iru), Charlie Weiss, Noah Gregory (wts.dev), Joshua Jewett@@JoshJewett33, Tomi (tk0) Koski@@tomikoski, Kraken Cryptocurrency Exchange, HE WEI（ギカク）(Calif), Joseph Semaan(Calif), bubu(Calif), Omar Cerrito(Calif), HE WEI (ギカク)(Calif), Roman Zabicki(Calif), Richard Zana(Calif), Chris Bailey - Short Circuit(Calif), Aswin Kumar Gokulakannan(Calif), Surya Narayan Kushwaha(Calif)

Affected Software

8 affected componentsFixes available
Apple visionOS<27
27
Apple iOS<27
27
Apple iPadOS<27
27
Apple macOS Golden Gate<27
27
Apple iPadOS<27.0
Apple iPhone OS<27.0
Apple macOS<27.0
Apple visionOS<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 and iPadOS to a version that resolves this vulnerability.

    Fixed in 27
  3. Upgrade

    Upgrade macOS Golden Gate to a version that resolves this vulnerability.

    Fixed in 27
  4. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 27

Event History

Sep 14, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Oct 26, 2026
CVE Published
via MITRE·08:36 PM
Data Sourced
via MITRE·08:36 PM
DescriptionWeakness
Data Sourced
via NVD·09:20 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which systems are identified as receiving the fix?

The issue is fixed in iOS 27, iPadOS 27, macOS Golden Gate 27, and visionOS 27.

2

What level of access might an attacker need to exploit the issue?

The description states that an app may be able to trigger unexpected system termination or write kernel memory, indicating exploitation is associated with a locally running app.

3

What impact is described for successful exploitation?

A malicious app may cause an unexpected system termination or write kernel memory.

Company

Resources

Contact

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