CVE-2026-84547: Input Validation

Published Sep 14, 2026
·
Updated

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in physical proximity may be able to corrupt process memory.

Other sources

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

— 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

afpfs. This issue was addressed by removing the vulnerable code.

— Apple

Credit

Arni Hardarson (Neonix Security), Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), CJ Vana, David Strnadel, Daniel Febrero, Asaf Cohen, Gongyu Ma@@Mezone0, Jian Lee@@speedyfriend433, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Stuart Wallace, 이재영, Sindre Sorhus, LiangWei, Dave G., an anonymous researcher, Cem Onat Karagun, Bhaswanth Chigurupati, Zhongcheng Li (CK01), Prashan Samarathunge, Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), Nick Cook, Sentry Flag, Johan Wahyudi, tamdao, S. Rosario, Tristan Madani@@TristanInSec(Talence Security), Niels Hofmans, Hyunwoo Kim@@v4bel, Franco Belman at Blackwing Intelligence, Richard Zana, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Mickey Jin@@patch1t, D4rthL, Ahmed Alwardani, Mohamad Dawoud / Abodi Dawoud, Ilya Andr (andrd3v), Zhongcheng Li(IES Red Team), Mr.Gedik@@h4ck2s3c, Mr.Gedik@@h4ck2s3c(Turkish Technology), Kun Peeks@@SwayZGl1tZyyy, Oren Yomtov, Morris Richman@@morrisinlife, Calif.io in collaboration with Claude, Anthropic Research, Peter Malone, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), CVE-2026-65414, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Marc Newlin(SkySafe), jioundai, 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), Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Jihwan Yoon, Dawuge(Shuffle Team), Mathis Mansière, Duc Anh Nguyen & Ta Duc Thien, Nathaniel Oh@@calysteon, Nik Tsytsarkin, Chris Bailey - Short Circuit, Siyeong kim, Meta Product Security, AL Najafi, Merrick Hare, Ryan Hughes, Kujtim Kryeziu (Sentry), Pavan Nallamothu, ret2happy, Mustafa Calap@@ordinal0, dbg.re), stratan@@5tratan, Rahul Raj, 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, 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, Manish Bhatt, Amazon Leo Security, oxsignal, Meta Red Team X - Nik Tsytsarkin, Junyeong Lee (jylab.github.io), Aditya Kumar, John Nzyuko Uvyu, Narendra Singh@@_3P1C, Geoffrey Lovelace, Yurii Bakurov, Bruce Dang(Calif), Ron Masas(BreakPoint), Luke Symons, Andrey Chernykh, Anand (anandsreekumar.com), Jiyong Yang, Vishal Patidar, Roman Zabicki, Redon Gashi(Sentry), He Wei (ギカク), 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, Dun, Justin O'Leary@@olearysec(olearysec), Meta Red Team X, Geonha Lee@@leegn4a, Mateusz Jurczyk(Google Project Zero), Eddy Tsalolikhin, Johann Rehberger, Varik Matevosyan, 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, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, Seiji Sakurai@@HeapSmasher, Csaba Fitzl@@theevilbit(Iru), genter0(Calif), Svetoslav Stolarov(Calif), Josh Maine(Calif), Bernhard Jackiewicz, Ryan Hileman via Xint Code (xint.io), James Young, OpenAI, Hüseyin Kabasakal@@HuseyinK01, Hiroki Imai (LAC Co., Ltd.), Surya Narayan Kushwaha, genter0, James Duffy@@0x4A616D657344, Abhijeet Singh (www.linkedin.com/in/abhiunix/), R4mbb(KRsecurity), Stuart Thomas, Vladislav Shevchenko (Positive Technologies), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Wang Yu, CVE-2019-5598, Mohamed Wedatalla, Arjanit Isufi, Adrián Díaz Aguilar, HvxyZLF, Shuiliang Xie, Kitten Food, Dave G.(supernetworks), Alex Radocea(supernetworks), Armend Gashi, Myeonghun Pak, Alan Banderas@@creeper4004, Mustafa Ahmed, Matthew Zamat, Yiğit Can YILMAZ@@yilmazcanyigit, Dmytro Merkulov, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Hoffcona(IES Red Team), silo, Tristan Madani (Talence Security), Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, Piotr Jerzy Duszynski(MurphySec), f0r(MurphySec), ธนกฤต ทัฬหะ, Hongsik Kim (mnur), Bálint Magyar (balintmagyar.com), Kieran Klukas (taciturnaxolotl), Liu Xue & 九宫格(Chongqing Telecom), Issa Sancho, @@08Tc3wBB(Jamf), Prathamesh Walunj(Iru), Ahmad Al Harrizuan Izadin, Ilya Andr (andrd3v)(Positive Technologies), Dhiyanesh Selvaraj@@redroot97, 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), John Lussier, Filip Olszak, Meshaal@@unrealmesh, Abodi Dawoud(van Dijk), Merrick Hare(van Dijk), Roel(van Dijk), Gergely Kalman@@gergely_kalman, Pranav Gopalkrishnan, Alan Wang, Ailsa Sun, Hovav Shacham, Riccardo Paccagnella, Chris Fletcher, David Kohlbrenner, Owen Pawling@@owenpawling, Stanislav Jelezoglo, Gongyu Ma (twitter@@Mezone0, Jonghoon Han (Aegis)(Shuffle Team), bubu(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), 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, YingMuo@@YingMuo(DEVCORE Research Team), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), 杉山 壮太, Abodi Dawoud, 糖豆爸爸(@晴天组织), Robert Mindo, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Paul Montgomery@@nullevent, Jérôme Djouder, Seung Je Seong(Positive Technologies), Jakob Pammer, Meridian Miftari, Amy (amys.website), Kirin@@Pwnrin, Zhongquan Li@@Guluisacat, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), deepsec@@DarkNavyOrg(DARKNAVY), Rohit Chatterjee, Lance Cain - Senior Consultant at SpecterOps Inc., Zeyang Li&Yuxiang Wang(Chongqing Telecom), 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), Souta Sugiyama, Viggo Lekdorf, Tomi Garcia (archyxsec), Kwak Kiyong / kakaogames, OGINOME Tomohito, Efstratios Kaplanellis@@5tratan(Almamater Technologies), Drin Raci(sentry), f00l@@PPPF00L, 3ndy1@@_3ndy1, Jared Reyes, Kraken Cryptocurrency Exchange(Nosebeard Labs), Manish Bhatt(Nosebeard Labs), Amazon Leo Security(Nosebeard Labs), Nathaniel Oh@@calysteon(Nosebeard Labs), Jonathan Bar Or@@yo_yo_yo_jbo(ThreatBook), Lyutoon, wdszzml, Peter Malone(ThreatBook), 이재영(Positive Technologies), Jakob Pammer(Positive Technologies), He Wei（ギカク)(Calif), Niels Hofmans(sentry), 진규정 (Gyujeong Jin, @@G1uN4sh, Piotr Jerzy Duszynski(Google Project Zero), ธนกฤต ทัฬหะ(MurphySec), Rahul Raj(MurphySec), PETOWORKS의 Bugeun Choi@@Bugeun(MurphySec), hxr1, Ashish Kunwar(Positive Technologies), Mikhail Lozhnikov(Positive Technologies), OSORI, Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte)

Affected Software

8 affected componentsFixes available
Apple macOS Golden Gate<27
Apple macOS Sequoia<15.8
Apple macOS Tahoe<26.7
Apple macOS Golden Gate<27
27
Apple macOS Tahoe<26.7
26.7
Apple macOS Sequoia<15.8
15.8
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 27
  2. Upgrade

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

    Fixed in 26.7
  3. Upgrade

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

    Fixed in 15.8
  4. Upgrade

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

    Fixed in 27
  5. Upgrade

    Upgrade macOS Sequoia to a version that resolves this vulnerability.

    Fixed in 15.8
  6. 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

Which systems are exposed to this issue?

Apple macOS Golden Gate, macOS Sequoia, and macOS Tahoe are affected. Apple identifies fixes in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.

2

What does an attacker need to exploit this vulnerability?

The attacker must be in physical proximity to the affected system. The available information does not describe any remote exploitation path.

3

What is the potential impact?

An attacker in physical proximity may be able to corrupt process memory. The provided information does not specify whether this leads to code execution, privilege escalation, or a denial of service.

Company

Resources

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