CVE-2026-84533: Race Condition

Published Sep 14, 2026
·
Updated

A cryptographic issue was addressed with improved integrity checks. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, watchOS 27. An attacker in a privileged network position may be able to modify network traffic.

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

APFS. A permissions issue was addressed with improved path validation.

— 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), Nick Cook, Sentry Flag, Mickey Jin@@patch1t, D4rthL, Ahmed Alwardani, Mohamad Dawoud / Abodi Dawoud, Mr.Gedik@@h4ck2s3c, Mr.Gedik@@h4ck2s3c(Turkish Technology), Kun Peeks@@SwayZGl1tZyyy, Oren Yomtov, 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, Manish Bhatt, Amazon Leo Security, Yurii Bakurov, Ron Masas(BreakPoint), 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, Eddy Tsalolikhin, James Duffy@@0x4A616D657344, Abhijeet Singh (www.linkedin.com/in/abhiunix/), Stuart Thomas, Mohamed Wedatalla, Adrián Díaz Aguilar, HvxyZLF, Dave G., Dave G.(supernetworks), Alex Radocea(supernetworks), Dmytro Merkulov, silo, Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, Kieran Klukas (taciturnaxolotl), Liu Xue & 九宫格(Chongqing Telecom), Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, 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), 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, Meridian Miftari, Amy (amys.website), Zhongquan Li@@Guluisacat, Koh M. Nakagawa@@tsunek0h(FFRI Security 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), Tomi (tk0) Koski@@tomikoski, Kraken Cryptocurrency Exchange, HE WEI（ギカク）(Calif), bubu(Calif), Omar Cerrito(Calif), Roman Zabicki(Calif), Richard Zana(Calif), Chris Bailey - Short Circuit(Calif), Aswin Kumar Gokulakannan(Calif), Surya Narayan Kushwaha(Calif)

Affected Software

10 affected componentsFixes available
Apple tvOS<27
27
Apple WatchOS<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 tvOS<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

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.

Frequently Asked Questions

1

Which Apple platform releases include the fix?

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

2

What level of access does an attacker need to exploit the network-traffic issue?

The attacker must be in a privileged network position to modify network traffic. The CVSS vector also indicates adjacent-network attack access, with no privileges or user interaction required, and high attack complexity.

Company

Resources

Contact

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