CVE-2026-86944: Buffer Overflow

Published Sep 14, 2026
·
Updated

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

Other sources

Accessibility. This issue was addressed with improved data protection.

— Apple

Accounts. This issue was addressed with additional entitlement checks.

— Apple

AMD. The issue was addressed with improved checks.

— Apple

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

— NVD

APFS. A buffer overflow was addressed with improved size validation.

— Apple

Credit

Richard Zana, Meta Red Team X - Nik Tsytsarkin, Geoffrey Lovelace, an anonymous researcher, Bruce Dang(Calif), Anthropic Research, Tommy DeVoss@@thedawgyg(Braze Security Team), Jiyong Yang, Justin O'Leary@@olearysec(olearysec), 진규정 (Gyujeong Jin, @@G1uN4sh, Gandalf4a(PKU), Anton Pakhunov, Niels Hofmans, Meta Red Team X, Geonha Lee@@leegn4a, Chris Bailey - Short Circuit, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, f00l@@PPPF00L, 3ndy1@@_3ndy1, Lyutoon, Dun, Bernhard Jackiewicz, Svetoslav Stolarov(Calif), Josh Maine(Calif), genter0, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Ye Zhang@@VAR10CK(Baidu Security), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), R4mbb(KRsecurity), Peter Malone, Tristan Madani@@TristanInSec(Talence Security), Vladislav Shevchenko (Positive Technologies), Hiroki Imai (LAC Co., Ltd.), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Bhaswanth Chigurupati, OpenAI, Hüseyin Kabasakal@@HuseyinK01, Wang Yu, Kitten Food, Matthew Zamat, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Drin Raci(sentry), Yiğit Can YILMAZ@@yilmazcanyigit, Musaab Khan@@bxff, Saoud Khalifah, stratan@@5tratan, Hcamael, 章鱼哥 (aipyaipy.com)@@aipy, Stanislav Jelezoglo, Hoffcona(IES Red Team), Ilya Andr (andrd3v), Franco Belman at Blackwing Intelligence, Hongsik Kim (mnur), Rahul Raj, Stuart Wallace, Dhiyanesh Selvaraj@@redroot97, Narendra Singh@@_3P1C, Nathaniel Oh@@calysteon, Surya Narayan Kushwaha, Roman Zabicki, John Lussier, Filip Olszak, bubu(Shuffle Team), Jonghoon Han (Aegis)(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), Dawuge(Shuffle Team), Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Abodi Dawoud, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Armend Gashi, Lehan Dilusha Jayasingha, 이재영(Positive Technologies), Seung Je Seong(Positive Technologies), Jakob Pammer(Positive Technologies), Ilya Andr (andrd3v)(Positive Technologies), Jérôme Djouder, Sindre Sorhus, Constantin Clerc(Calif), Shad J(Calif), Huy Nguyen@@34306(Calif), huami1314@@huamidev, Milad Nasr, Nicholas Carlini with Claude, Anthropic, OGINOME Tomohito, Niels Hofmans(sentry), Hyunwoo Kim@@v4bel, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Adriatik Raci, Manish Bhatt, Amazon Leo Security, Junyeong Lee (jylab.github.io), Merrick Hare, John Nzyuko Uvyu, Aditya Kumar, Luke Symons, Redon Gashi(Sentry), Arni Hardarson (Neonix Security)(Talence Security), 정우 하, Aswin Kumar Gokulakannan, Jonathan Bar Or@@yo_yo_yo_jbo(ThreatBook), Feng Xue(ThreatBook), XGPT(ThreatBook), Alfredo Pesoli@@__rev(Bynar), 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, Piotr Jerzy Duszynski(Google Project Zero), ธนกฤต ทัฬหะ(MurphySec), Rahul Raj(MurphySec), PETOWORKS의 Bugeun Choi@@Bugeun(MurphySec), f0r(MurphySec), Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, Ruslan Dautov, hxr1, James Duffy@@0x4A616D657344, Eddy Tsalolikhin, Omar Cerrito, Abhijeet Singh (www.linkedin.com/in/abhiunix/), Stuart Thomas, Ashish Kunwar(Positive Technologies), Mikhail Lozhnikov(Positive Technologies), CVE-2019-5598, Mohamed Wedatalla, Arjanit Isufi, HvxyZLF, Adrián Díaz Aguilar, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, Liu Xue & 九宫格(Chongqing Telecom), 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), OSORI, Ricardo Prado, Jakob Pammer(Calif), 재영 정(Calif), 재영 정(ThreatBook), Peter Malone(ThreatBook), Jay Patel, 재영 정, Dave G., Cem Onat Karagun, YingMuo@@YingMuo(DEVCORE Research Team), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), 杉山 壮太, AL Najafi, 糖豆爸爸(@晴天组织), Robert Mindo, Amy (amys.website), Meridian Miftari, Aaron Grattafiori - NVIDIA AI Red Team, Zeyang Li&Yuxiang Wang(Chongqing Telecom), Tomi (tk0) Koski@@tomikoski, Hari Shanmugam (The Hxr1), 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), HE WEI（ギカク）(Calif), Kraken Cryptocurrency Exchange(Nosebeard Labs), Beomseok Oh@@KAIST, Yongdae Kim@@KAIST, CVE-2026-65414, jioundai, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Mathis Mansière, an anonymous researcher(Calif), 章鱼哥 (aipyaipy.com)@@aipy(Calif), Anna Groza@@pwnlambda(Calif), Siyeong kim, Meta Product Security, 정우 하@@0xfa11babe, tamdao, Pavan Nallamothu, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, flower xu, PETOWORKS의 Bugeun Choi@@Bugeun, Ryohei Ueki Research)@@SYZD, Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Stuart Wallace(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Jian Lee@@speedyfriend433, Gongyu Ma@@Mezone0, David Strnadel, CJ Vana, Asaf Cohen, LiangWei, Zhongcheng Li (CK01), Lehan Dilusha Jayasingha (Sri Lanka), Jasminder Pal Singh, Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Mickey Jin@@patch1t, Jared Reyes, D4rthL, Mohamad Dawoud / Abodi Dawoud, Ahmed Alwardani, Mr.Gedik@@h4ck2s3c(Turkish Technology), Mr.Gedik@@h4ck2s3c, Oren Yomtov, Morris Richman@@morrisinlife, Kun Peeks@@SwayZGl1tZyyy, Marc Newlin(SkySafe), Sanny Mitra(Cystack), Sihyun Roh (Compsec(Cystack), SNU)(Cystack), ngockhanh(Cystack), Suresh Sundaram, Surej Sekhar, Ataberk Yavuzer, Ryan Hughes, Kujtim Kryeziu (Sentry), Mustafa Calap@@ordinal0, dbg.re), Yongyue WANG AKA Brian.W(OKX security), Meshaal @ Darkcov, Joseph Shamoon, 章鱼哥 （aipyaipy.com）@@aipy, instantraaamen (github.com/instantraaamen) Contact: masa.shiramizu.com@@gmail, 章鱼哥 (aipyaipy.com）@@aipy, Thiago Mayllart, Manish Bhatt(Nosebeard Labs), Amazon Leo Security(Nosebeard Labs), Nathaniel Oh@@calysteon(Nosebeard Labs), Dave G.(supernetworks), Alex Radocea(supernetworks), Prathamesh Walunj(Iru), Csaba Fitzl@@theevilbit(Iru), Ahmad Al Harrizuan Izadin, wdszzml, Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, Abodi Dawoud(van Dijk), Roel(van Dijk), He Wei（ギカク)(Calif)

Affected Software

12 affected componentsFixes available
Apple iOS<26.7
Apple iPadOS<26.7
Apple macOS Sequoia<15.8
Apple macOS Tahoe<26.7
Apple iOS<26.7
26.7
Apple iPadOS<26.7
26.7
Apple macOS Sequoia<15.8
15.8
Apple macOS Tahoe<26.7
26.7
Apple iPadOS<26.7
Apple iPhone OS<26.7
Apple macOS<15.8
Apple macOS>=26.0<26.7

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 26.7
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 15.8
  3. Upgrade

    Upgrade iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 26.7
  4. Upgrade

    Upgrade macOS Sequoia to a version that resolves this vulnerability.

    Fixed in 15.8
  5. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.7

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 level of access does an attacker need to trigger this issue?

The issue may be triggered by an app. The available information does not state whether the app must be installed by the user, whether it requires particular permissions, or whether remote delivery is possible.

2

What is the known impact?

A malicious or affected app may cause unexpected system termination. The provided information does not describe data disclosure, privilege escalation, or code execution.

3

Which software releases contain the fix?

The issue is fixed in iOS 26.7, iPadOS 26.7, macOS Sequoia 15.8, and macOS Tahoe 26.7.

Company

Resources

Contact

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