CVE-2026-65400: Apple macOS Improper Authentication Vulnerability

Published Aug 6, 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. 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

AMD. The issue was addressed with improved checks.

— Apple

Credit

Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Tommy DeVoss@@thedawgyg(Braze Security Team), an anonymous researcher, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, Chris Bailey - Short Circuit, Mustafa Calap@@ordinal0, dbg.re), David Strnadel, Meta Red Team X - Nik Tsytsarkin, Seiji Sakurai@@HeapSmasher, Franco Belman at Blackwing Intelligence, Csaba Fitzl@@theevilbit(Iru), Narendra Singh@@_3P1C, Nathaniel Oh@@calysteon, 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), James Young, OpenAI, Hüseyin Kabasakal@@HuseyinK01, Ye Zhang@@VAR10CK(Baidu Security), Hiroki Imai (LAC Co., Ltd.), Aswin Kumar Gokulakannan, Surya Narayan Kushwaha, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), genter0, Eddy Tsalolikhin, James Duffy@@0x4A616D657344, Abhijeet Singh (www.linkedin.com/in/abhiunix/), Omar Cerrito, R4mbb(KRsecurity), Peter Malone, Stuart Thomas, Vladislav Shevchenko (Positive Technologies), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Mohamed Wedatalla, Arjanit Isufi, Adrián Díaz Aguilar, HvxyZLF, Shuiliang Xie, Kitten Food, Dave G., Dave G.(supernetworks), Alex Radocea(supernetworks), Dawuge(Shuffle Team), Armend Gashi, Richard Zana, Myeonghun Pak, Alan Banderas@@creeper4004, Matthew Zamat, Yiğit Can YILMAZ@@yilmazcanyigit, Dmytro Merkulov, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Hoffcona(IES Red Team), silo, Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, stratan@@5tratan, Hongsik Kim (mnur), Rahul Raj, Bálint Magyar (balintmagyar.com), Stuart Wallace, Kieran Klukas (taciturnaxolotl), Liu Xue & 九宫格(Chongqing Telecom), Issa Sancho, @@08Tc3wBB(Jamf), Ilya Andr (andrd3v)(Positive Technologies), CJ Vana, Dhiyanesh Selvaraj@@redroot97, 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), Roman Zabicki, John Lussier, Filip Olszak, Meshaal@@unrealmesh, Abodi Dawoud(van Dijk), Merrick Hare(van Dijk), Roel(van Dijk), 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, Bruce Dang(Calif), Anthropic Research, Jakob Pammer(Calif), 재영 정(Calif), Feng Xue(ThreatBook), XGPT(ThreatBook), 재영 정(ThreatBook), Jay Patel, 재영 정, Cem Onat Karagun, YingMuo@@YingMuo(DEVCORE Research Team), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), AL Najafi, Abodi Dawoud, Sindre Sorhus, 糖豆爸爸(@晴天组织), Niels Hofmans, Robert Mindo, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Paul Montgomery@@nullevent, Jérôme Djouder, Seung Je Seong(Positive Technologies), Jakob Pammer, Meridian Miftari, Amy (amys.website), Aaron Grattafiori - NVIDIA AI Red Team, Kirin@@Pwnrin, 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), 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, 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), Souta Sugiyama, Viggo Lekdorf, Tomi Garcia (archyxsec), Kwak Kiyong / kakaogames, OGINOME Tomohito, Drin Raci(sentry), Mickey Jin@@patch1t, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Hyunwoo Kim@@v4bel, Adriatik Raci, Manish Bhatt, Amazon Leo Security, oxsignal, ngockhanh(Cystack), Junyeong Lee (jylab.github.io), Merrick Hare, Aditya Kumar, John Nzyuko Uvyu, Geoffrey Lovelace, Nik Tsytsarkin, Yurii Bakurov, Asaf Cohen, Ron Masas(BreakPoint), Luke Symons, Andrey Chernykh, Anand (anandsreekumar.com), Jiyong Yang, Vishal Patidar, Redon Gashi(Sentry), He Wei (ギカク), Alfredo Pesoli@@__rev(Bynar), Jonathan Bar Or@@yo_yo_yo_jbo, Arni Hardarson (Neonix Security)(Talence Security), 정우 하, Ilya Andr (andrd3v), Justin O'Leary@@olearysec(olearysec), Meta Red Team X, Geonha Lee@@leegn4a, 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, Mustafa Ahmed, Tristan Madani (Talence Security), Piotr Jerzy Duszynski(MurphySec), f0r(MurphySec), PETOWORKS의 Bugeun Choi@@Bugeun, ธนกฤต ทัฬหะ, Prathamesh Walunj(Iru), Ahmad Al Harrizuan Izadin, Anon Tuttu Venus, Stefan Esser (Calif), Gergely Kalman@@gergely_kalman, Arni Hardarson (Neonix Security), 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., Efstratios Kaplanellis@@5tratan(Almamater Technologies), Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Gongyu Ma@@Mezone0, Jian Lee@@speedyfriend433, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), LiangWei, 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, tamdao, S. Rosario, D4rthL, Ahmed Alwardani, Mohamad Dawoud / Abodi Dawoud, 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, Ruslan Dautov, CVE-2026-65414, Marc Newlin(SkySafe), jioundai, Murray Mike(Nosebeard Labs), zenith, Sanny Mitra(Cystack), Sihyun Roh (Compsec(Cystack), SNU)(Cystack), Ataberk Yavuzer, 정우 하@@0xfa11babe, Surej Sekhar, Suresh Sundaram, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Jihwan Yoon, Mathis Mansière, Duc Anh Nguyen & Ta Duc Thien, Siyeong kim, Meta Product Security, Ryan Hughes, Kujtim Kryeziu (Sentry), Pavan Nallamothu, ret2happy, 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, 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, flower xu, Ryohei Ueki Research)@@SYZD, Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, 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)

Affected Software

9 affected componentsFixes available
Apple macOS Sequoia<15.7.9
15.7.9
Apple macOS Tahoe<26.6.1
26.6.1
Apple macOS Sonoma<14.8.9
14.8.9
Apple macOS
Apple macOS Golden Gate<27
27
Apple macOS Tahoe<26.7
26.7
Apple macOS>=14.0<14.8.9
Apple macOS>=15.0<15.7.9
Apple macOS>=26.0<26.6.1

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 26.6.1
  4. Upgrade

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

    Fixed in 14.8.9
  5. Upgrade

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

    Fixed in 15.7.9
  6. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in macOS Golden Gate 27
  7. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in macOS Sequoia 15.7.9
  8. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in macOS Sonoma 14.8.9
  9. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in macOS Tahoe 26.6.1
  10. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in macOS Tahoe 26.7

Event History

Aug 6, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·06:17 PM
Data Sourced
via MITRE·06:17 PM
DescriptionWeakness
Data Sourced
via NVD·10:18 PM
DescriptionSeverityWeaknessAffected Software
Aug 14, 2026
News Published
via BleepingComputer·02:59 PM
Aug 18, 2026
Data Sourced
via CISA·12:00 AM
RemedyDescriptionWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-65400?

CVE-2026-65400 has a risk rating of 37, indicating a significant security impact.

2

What type of vulnerability is CVE-2026-65400?

CVE-2026-65400 addresses an authentication issue related to screen sharing.

3

How do I fix CVE-2026-65400?

To fix CVE-2026-65400, ensure you update your Apple macOS to the latest version available.

4

Which Apple macOS versions are affected by CVE-2026-65400?

CVE-2026-65400 affects Apple macOS Sequoia, Tahoe, and Sonoma versions.

5

What does CVE-2026-65400 improve in terms of security?

CVE-2026-65400 improves state management to enhance authentication security during screen sharing.

Company

Resources

Contact

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