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.
— MITRE
APFS. An out-of-bounds write issue was addressed with improved bounds checking.
— Apple
Credit
Mustafa Calap@@ordinal0, dbg.re), Meta Red Team X - Nik Tsytsarkin, Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Anthropic Research, Peter Malone, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), CVE-2026-65414, an anonymous researcher, Stanislav Jelezoglo, Heiner Gerdes, Siyeong kim, Stuart Wallace, ret2happy, Meta Product Security, 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, Nik Tsytsarkin, Bruce Dang(Calif), Tommy DeVoss@@thedawgyg(Braze Security Team), Jiyong Yang, Vishal Patidar, Roman Zabicki, Justin O'Leary, Geonha Lee@@leegn4a, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, Chris Bailey - Short Circuit, David Strnadel, hxr1, Seiji Sakurai@@HeapSmasher, Franco Belman at Blackwing Intelligence, genter0(Calif), Svetoslav Stolarov & Aisa Fox(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.), 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), Myeonghun Pak, Nathaniel Oh@@calysteon, Alan Banderas@@creeper4004, Yiğit Can YILMAZ@@yilmazcanyigit, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Sindre Sorhus(IES Red Team), Hoffcona(IES Red Team), Hongsik Kim (mnur), Dhiyanesh Selvaraj@@redroot97, John Lussier, Filip Olszak, Owen Pawling@@owenpawling, Gongyu Ma (twitter@@Mezone0, YingMuo@@YingMuo(DEVCORE Research Team), Sindre Sorhus, 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), Mohit Negi, Myungyong Lee, Kwak Kiyong@@Pwnkai23, Song Nuri, Jian Lee@@speedyfriend433, Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), CJ Vana, Daniel Febrero, Asaf Cohen, Gongyu Ma@@Mezone0, Cem Onat Karagun, Zhongcheng Li (CK01), Prashan Samarathunge, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Dawuge(Shuffle Team), Pavan Nallamothu, f00l@@PPPF00L, 3ndy1@@_3ndy1, Minghao Lin@@Y1nkoc, 云散花折, Arjanit Isufi, Kitten Food, Issa Sancho, Ilya Andr (andrd3v)(Positive Technologies), Constantin Clerc(Calif), Shad J(Calif), huami1314@@huamidev(Calif), Huy Nguyen@@34306(Calif), Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), tamdao, Richard Zana, Alexandre Borges, Ilya Andr (andrd3v), Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Yongdae Kim @ SysSec, KAIST, Sindre Sorhus(Positive Technologies), AL Najafi, flower xu, Adriatik Raci, PETOWORKS의 Bugeun Choi@@Bugeun, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Hyunwoo Kim@@v4bel, Geoffrey Lovelace, Luke Symons, Csaba Fitzl@@theevilbit(Iru), Bernhard Jackiewicz, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Morris Richman@@morrisinlife, Tristan Brennan, Matthew Zamat, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Drin Raci(sentry), Bálint Magyar (balintmagyar.com), Meshaal@@unrealmesh, Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Abodi Dawoud, Armend Gashi, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Lehan Dilusha Jayasingha, Jérôme Djouder, Seung Je Seong(Positive Technologies), Jakob Pammer, Bedran Karakoc(Ruhr University Bochum), Tobias Funke(Ruhr University Bochum), Jacopo Clark(Ruhr University Bochum), Katharina Kohls(Ruhr University Bochum), Tomi Garcia (archyxsec), Niels Hofmans, OGINOME Tomohito, Yusuf Kelany, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), 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.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 27
Event History
Sep 14, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Affected 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.
- CVE-2026-86882
- CVE-2026-43664
- CVE-2026-84523
- CVE-2026-86888
- CVE-2026-65407
- CVE-2026-65339
- CVE-2026-84583
- CVE-2026-65410
- CVE-2026-84616
- CVE-2026-84607
- CVE-2026-65406
- CVE-2026-65414
- CVE-2026-84560
- CVE-2026-86895
- CVE-2026-86893
- CVE-2026-65344
- CVE-2026-43737
- CVE-2026-84596
- CVE-2026-84575
- CVE-2026-84571
- CVE-2026-84511
- CVE-2026-84612
- CVE-2026-43785
- CVE-2026-84524
- CVE-2026-84597
- CVE-2026-65409
- CVE-2026-84492
- CVE-2026-84533
- CVE-2026-84564
- CVE-2026-65347
- CVE-2026-65346
- CVE-2026-65395
- CVE-2026-28969
- CVE-2026-65398
- CVE-2026-64736
- CVE-2026-64760
- CVE-2026-28968
- CVE-2026-65415
- CVE-2026-65343
- CVE-2026-65349
- CVE-2026-84561
- CVE-2026-84630
- CVE-2026-65360
- CVE-2026-65358
- CVE-2026-65377
- CVE-2026-84622
- CVE-2026-43687
- CVE-2026-43686
- CVE-2026-65405
- CVE-2026-84530
- CVE-2026-65402
- CVE-2026-65359
- CVE-2026-84507
- CVE-2026-86903
- CVE-2026-65330
- CVE-2026-28935
- CVE-2026-84602
- CVE-2026-84628
- CVE-2026-84497
- CVE-2026-84615
- CVE-2026-43695
- CVE-2026-84626
- CVE-2026-84491
- CVE-2026-84629
- CVE-2026-28966
- CVE-2026-84532
- CVE-2026-84487
- CVE-2026-84632
- CVE-2026-84620
- CVE-2026-84546
- CVE-2026-84611
- CVE-2026-84526
- CVE-2026-86881
- CVE-2026-84600
- CVE-2026-86884
- CVE-2026-84609
- CVE-2026-84513
- CVE-2026-84527
- CVE-2026-84635
- CVE-2026-65341
- CVE-2026-64753
- CVE-2026-64715
- CVE-2026-64787
- CVE-2026-43794
- CVE-2026-64778
- CVE-2026-65391
- CVE-2026-65390
- CVE-2026-84636
- CVE-2026-84617
- CVE-2026-84586
- CVE-2026-65399
- CVE-2026-86891
- CVE-2026-86876
- CVE-2026-65412
- CVE-2026-64788
- CVE-2026-86870
- CVE-2026-65403
- CVE-2026-84551
- CVE-2026-84625
- CVE-2026-84603
- CVE-2026-86886
- CVE-2026-86904
- CVE-2026-64761
- CVE-2026-65404
- CVE-2026-20683
- CVE-2026-65408
- CVE-2026-84519
- CVE-2026-84593
- CVE-2026-86905
- CVE-2026-86885
- CVE-2026-86879
- CVE-2026-86878
- CVE-2026-64752
- CVE-2026-84624
- CVE-2026-84489
- CVE-2026-43738
- CVE-2026-84552
- CVE-2026-84510
- CVE-2026-84534
- CVE-2026-43688
- CVE-2026-84606
- CVE-2026-64756
- CVE-2026-65354
- CVE-2026-84566
- CVE-2026-43689
- CVE-2026-84521
- CVE-2026-86883
- CVE-2026-86924
- CVE-2026-65411
- CVE-2026-84598
- CVE-2026-84623
- CVE-2026-84518
- CVE-2026-86897
- CVE-2026-84531
- CVE-2026-86890
- CVE-2026-84621
- CVE-2026-86892
- CVE-2026-65348
- CVE-2026-65345
- CVE-2026-65329
- CVE-2026-86887
- CVE-2026-86898
- CVE-2026-64718
- CVE-2026-43674
- CVE-2026-64784
- CVE-2026-43795
- CVE-2026-65338
- CVE-2026-64782
- CVE-2026-64781
- CVE-2026-65351
- CVE-2026-65340
- CVE-2026-65337
- CVE-2026-65336
- CVE-2026-65335
- CVE-2026-65333
- CVE-2026-65332
- CVE-2026-65331
- CVE-2026-64780
- CVE-2026-65334
- CVE-2026-64779
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.