CVE-2026-86921: Input Validation

Published Sep 14, 2026
·
Updated

A permissions issue was addressed with improved validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. A local attacker may be able to overwrite restricted files.

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

Abodi Dawoud, tamdao, Franco Belman at Blackwing Intelligence, Richard Zana, Meta Red Team X - Nik Tsytsarkin, Alexandre Borges, Ilya Andr (andrd3v), Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Anthropic Research, Peter Malone, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Yongdae Kim @ SysSec, KAIST, Beomseok Oh@@KAIST, Yongdae Kim@@KAIST, CVE-2026-65414, an anonymous researcher, jioundai, Sindre Sorhus(Positive Technologies), Ilya Andr (andrd3v)(Positive Technologies), Asaf Cohen, Stanislav Jelezoglo, Heiner Gerdes, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Mathis Mansière, Nik Tsytsarkin, Chris Bailey - Short Circuit, Siyeong kim, Meta Product Security, AL Najafi, Stuart Wallace, Pavan Nallamothu, ret2happy, Mustafa Calap@@ordinal0, dbg.re), stratan@@5tratan, Rahul Raj, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Tommy DeVoss@@thedawgyg(Braze Security Team), 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, Narendra Singh@@_3P1C, Geoffrey Lovelace, Bruce Dang(Calif), Jiyong Yang, Vishal Patidar, Roman Zabicki, Luke Symons, Justin O'Leary@@olearysec(olearysec), Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, David Strnadel, Seiji Sakurai@@HeapSmasher, Csaba Fitzl@@theevilbit(Iru), genter0(Calif), Svetoslav Stolarov(Calif), Josh Maine(Calif), Dun, Bernhard Jackiewicz, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Ryan Hileman via Xint Code (xint.io), 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), OpenAI, Hüseyin Kabasakal@@HuseyinK01, Kitten Food, Sindre Sorhus, Morris Richman@@morrisinlife, Tristan Brennan, Myeonghun Pak, Nathaniel Oh@@calysteon, Alan Banderas@@creeper4004, Matthew Zamat, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Drin Raci(sentry), Yiğit Can YILMAZ@@yilmazcanyigit, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Hoffcona(IES Red Team), Hongsik Kim (mnur), Bálint Magyar (balintmagyar.com), Issa Sancho, CJ Vana, Gongyu Ma@@Mezone0, Dhiyanesh Selvaraj@@redroot97, Surya Narayan Kushwaha, John Lussier, Filip Olszak, Meshaal@@unrealmesh, Abodi Dawoud(van Dijk), Merrick Hare(van Dijk), Roel(van Dijk), Owen Pawling@@owenpawling, Gongyu Ma (twitter@@Mezone0, Jonghoon Han (Aegis)(Shuffle Team), bubu(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), Dawuge(Shuffle Team), Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), YingMuo@@YingMuo(DEVCORE Research Team), Armend Gashi, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Lehan Dilusha Jayasingha, Jérôme Djouder, Seung Je Seong(Positive Technologies), Jakob Pammer, Kirin@@Pwnrin, Constantin Clerc(Calif), Shad J(Calif), huami1314@@huamidev(Calif), Huy Nguyen@@34306(Calif), Zeyang Li&Yuxiang Wang(Chongqing Telecom), 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), Souta Sugiyama, Viggo Lekdorf, Tomi Garcia (archyxsec), Kwak Kiyong / kakaogames, Niels Hofmans, OGINOME Tomohito, Yusuf Kelany, Jian Lee@@speedyfriend433, James Young, Aswin Kumar Gokulakannan, genter0, Eddy Tsalolikhin, James Duffy@@0x4A616D657344, Abhijeet Singh (www.linkedin.com/in/abhiunix/), Omar Cerrito, Stuart Thomas, Mohamed Wedatalla, Arjanit Isufi, Adrián Díaz Aguilar, HvxyZLF, Shuiliang Xie, 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), @@08Tc3wBB(Jamf), 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), Ricardo Prado, Jakob Pammer(Calif), 재영 정(Calif), Feng Xue(ThreatBook), XGPT(ThreatBook), 재영 정(ThreatBook), Jay Patel, 재영 정, Cem Onat Karagun, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), 糖豆爸爸(@晴天组织), Robert Mindo, Paul Montgomery@@nullevent, Meridian Miftari, Amy (amys.website), Aaron Grattafiori - NVIDIA AI Red Team, Zhongquan Li@@Guluisacat, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), deepsec@@DarkNavyOrg(DARKNAVY), Mickey Jin@@patch1t(Iru), Rohit Chatterjee(Iru), Zhongquan Li@@Guluisacat(Iru), Lance Cain - Senior Consultant at SpecterOps Inc.(Iru), 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, Hari Shanmugam (The Hxr1), 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), Mickey Jin@@patch1t, He Wei (ギカク), 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, Daniel Febrero, Wang Yu, CVE-2019-5598, Piotr Jerzy Duszynski(MurphySec), f0r(MurphySec), ธนกฤต ทัฬหะ, Gergely Kalman@@gergely_kalman, Arni Hardarson (Neonix Security), Jagannath Mohanty, Mohamad Dawoud, Efstratios Kaplanellis@@5tratan(Almamater Technologies), Manish Bhatt, Amazon Leo Security, oxsignal, ngockhanh(Cystack), Yurii Bakurov, Ron Masas(BreakPoint), Andrey Chernykh, Anand (anandsreekumar.com), Redon Gashi(Sentry), Alfredo Pesoli@@__rev(Bynar), Jonathan Bar Or@@yo_yo_yo_jbo, Arni Hardarson (Neonix Security)(Talence Security), 정우 하, Meta Red Team X, Geonha Lee@@leegn4a, Mustafa Ahmed, Tristan Madani (Talence Security), Prathamesh Walunj(Iru), Ahmad Al Harrizuan Izadin, Anon Tuttu Venus, Stefan Esser (Calif), Pranav Gopalkrishnan, Alan Wang, Ailsa Sun, Hovav Shacham, Riccardo Paccagnella, Chris Fletcher, David Kohlbrenner, Abodi Dawoud(Best Buddy Apps), Guilherme Rambo(Best Buddy Apps), 杉山 壮太, Rohit Chatterjee, Lance Cain - Senior Consultant at SpecterOps Inc., Zhongcheng Li (CK01), Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), S. Rosario, Jihwan Yoon, Duc Anh Nguyen & Ta Duc Thien, Chanwit Muenprakoddee (ChemIndy), f00l@@PPPF00L, 3ndy1@@_3ndy1, Minghao Lin@@Y1nkoc, 云散花折, hxr1, Drinor Selmanaj (Sentry), Ashish Kunwar(Positive Technologies), Mikhail Lozhnikov(Positive Technologies), OSORI, Janggoon Lee(Out of Bounds), OpenAI Codex Security - Amy Burnett, wwwlk, Henock Habte, Charles Kern, Seonwook Kim, Shubham Chaskar, lattice, Josef Korbel, Thomas Guillem, Josef Korbel (Citadelo), Kun Peeks@@SwayZGl1tZyyy, Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), Dung Do@@_piers2(Calif), Junhyuk Im(S2W Inc), Seungyun Lee(S2W Inc), Mohit Negi, Myungyong Lee, Kwak Kiyong@@Pwnkai23, Song Nuri, 진규정 (Gyujeong Jin, @@G1uN4sh, Gandalf4a(PKU), Anton Pakhunov, Lyutoon, Musaab Khan@@bxff, Saoud Khalifah, Hcamael, 章鱼哥 (aipyaipy.com)@@aipy, 이재영(Positive Technologies), Jakob Pammer(Positive Technologies), huami1314@@huamidev, Milad Nasr, Nicholas Carlini with Claude, Anthropic, Niels Hofmans(sentry), Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Ryohei Ueki Research)@@SYZD, LiangWei, Prashan Samarathunge, Nick Cook, Sentry Flag, 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), Ataberk Yavuzer, 정우 하@@0xfa11babe, Surej Sekhar, Suresh Sundaram, Ryan Hughes, Kujtim Kryeziu (Sentry), Yongyue WANG AKA Brian.W(OKX security), Юлия Мерцалова, 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, Jurre van Bergen - Threatnotify, Redon Gashi (Sentry), Thiago Mayllart, Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, an anonymous researcher(Calif), 章鱼哥 (aipyaipy.com)@@aipy(Calif), Anna Groza@@pwnlambda(Calif)

Affected Software

14 affected componentsFixes available
Apple iOS<26.7, <27
Apple iPadOS<26.7, <27
Apple macOS Golden Gate<27
Apple visionOS<27
Apple iOS<27
27
Apple iPadOS<27
27
Apple macOS Golden Gate<27
27
Apple visionOS<27
27
Apple iOS<26.7
26.7
Apple iPadOS<26.7
26.7
Apple iPadOS<26.7
Apple iPhone OS<26.7
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 to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.7
  3. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26.7
  4. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26.7
  5. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 27
  6. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 27
  7. Upgrade

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

    Fixed in 27
  8. 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 20, 2026
CVE Published
via MITRE·12:50 AM
Data Sourced
via MITRE·12:50 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 access does an attacker need to exploit this issue?

The attacker must have local access to the affected device. The available information does not indicate that the issue can be exploited remotely.

2

Which systems should be updated?

Update devices running affected Apple operating systems to iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, or visionOS 27, as applicable.

3

What could successful exploitation allow?

A local attacker may be able to overwrite files that should be restricted by permissions.

Company

Resources

Contact

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