CVE-2026-64771: Buffer Overflow

Published Jul 27, 2026
·
Updated

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.

Other sources

Accessibility. This issue was addressed through improved state management.

— Apple

Accounts Framework. This issue was addressed with improved data protection.

— Apple

Accounts. A parsing issue in the handling of directory paths was addressed with improved path validation.

— Apple

Accounts. An access issue was addressed with additional sandbox restrictions.

— Apple

afpfs. A buffer overflow was addressed with improved bounds checking.

— Apple

Credit

Rosyna Keller(Totally Not Malicious Software), Rahul Raj, Seonung Park, ALTV!ST (altvi.st/), David Strnadel, Franco Belman at Blackwing Intelligence, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Anton Pakhunov, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Daniel Febrero, Daniel Williams, Anonymous(TrendAI Zero Day Initiative), Mathis Mansière, an anonymous researcher, James Duffy@@0x4A616D657344, Huỳnh Tấn Ngàn, Ilya Andr (andrd3v)(Positive Technologies), Stanislav Jelezoglo, Redon Gashi, Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Arni Hardarson, Jonathan Alush-Aben, Peter Malone, 진규정 (Gyujeong Jin, @@G1uN4sh, PETOWORKS의 Bugeun Choi@@Bugeun, Geonha Lee@@leegn4a, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Ashish Kunwar, Hiroki Imai (LAC Co., Ltd.), hxr1, f0r(MurphySec), Feng Xue(ThreatBook), XGPT(ThreatBook), Mahmoud Abdelmoniem, Wang Yu, Lyutoon, DARKNAVY@@DarkNavyOrg, Fábio Luís@@scanpt, Nicolas Rabrenovic, Pasquale Scola(STAR Labs SG Pte), Gor Aleksanyan, impost0r (ret2plt)(Appknox), Ruslan Dautov(Appknox), Aleksandr Tarasikov(Appknox), jay(Appknox), Dhiyanesh Selvaraj@@redroot97(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Lyutoon(STAR Labs SG Pte), DongJun Kim (smlijun) with UIUC(STAR Labs SG Pte), Hwiwon Lee (hwiwonl) with UIUC(STAR Labs SG Pte), Jongseong Kim (nevul37) with UIUC(STAR Labs SG Pte), Younggi Park (grill66) with UIUC(STAR Labs SG Pte), Peter Malone(STAR Labs SG Pte), an anonymous researcher(STAR Labs SG Pte), Hari Shanmugam (The Hxr1)(STAR Labs SG Pte), Marco Grassi, Dun, Daniele Castronovo, Michal Kosiorek, Josh Maine(Calif), Ruslan Dautov(Baidu Security), 재영 정(Baidu Security), (Rao Ali Nawaz)@@rootxran(Baidu Security), Chanwit Muenprakoddee (ChemIndy)(Baidu Security), an anonymous researcher(Baidu Security), Ye Zhang@@VAR10CK(Baidu Security), Franco Belman at Blackwing Intelligence(Calif), Christian Figueroa(Calif), Johnny Franks@@zeroxjf(Calif), Ashmit Sharma & Atul RV(Calif), Peter Malone(Calif), Muhamad Syaiful(Calif), Muneeb Amin Bhat(Calif), Dhiyanesh Selvaraj@@redroot97(Calif), Ali Marzouq(Calif), Bountyy Oy - Mihalis Haatainen(Calif), Huy Nguyen@@34306(Calif), Eddy Tsalolikhin, beist(ASU SEFCOM), Adam Doupé(ASU SEFCOM), Dun(STAR Labs SG Pte), Johnny Franks@@zeroxjf, Asjid Kalam@@odinshell, impost0r (ret2plt), Hyunwoo Kim@@v4bel, Ryan Hileman via Xint Code (xint.io), Vladislav Shevchenko (Positive Technologies)(Baidu Security), N.M.Praveen Nawarathne@@zblockrat, Lukas Gerlach, CVE-2026-4424, Tristan Madani@@TristanInSec(Talence Security), Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), stratan@@5tratan, wh0am1i, Francisco Knabe, 彦辰, dr3dd, Nathaniel Oh@@calysteon, Gurpreet Shergill, Merrick Hare, Drinor Selmanaj (Sentry), Khai Tran, John Lussier, Rhyru9, Kwak Kiyong, Song Nuri, stratan@@5tratan(Almamater Technologies), Josef Korbel (Citadelo), Tristan Madani, CVE-2026-43709, Юлия Мерцалова, Tommy DeVoss@@thedawgyg(Braze Security Team), Kagami Rosylight(Mozilla), Gia Bui@@yabeow(Calif), 杉山 壮太(Z), lattice(Z), Behzad Najjarpour Jabbari@@_G4ru_(Z), Junyeong Lee(Z), Mooth.ai(Z), OGINOME Tomohito(Z), Using GLM(Z), Luke Francis, Soyeon Park, Amy Burnett, Utkarsh Pal, Ignacio Sanmillan@@ulexec, Kwak Kiyong(Talence Security), Song nuri(Talence Security), Milad Nasr, Nicholas Carlini with Claude, Anthropic, Jody Ritonga, Behzad Najjarpour Jabbari@@_G4ru_, OpenAI Codex Security - Amy Burnett, Aaron Grattafiori - NVIDIA AI Red Team, Vitaly Simonovich, Christian Meurer Xavier, Heiko Kiesel(SEEMOO), TU Darmstadt, Nan Wang@@eternalsakura13, Mateusz Krzywicki (iVerify.io)(Braze Security Team), dr3dd(Braze Security Team), Brian Carpenter, Josef Korbel, OGINOME Tomohito, Idan Masas, Shaheen Fazim, CVE-2026-28979, CVE-2026-3784, CVE-2026-3783, Manuel Fernandez (Stackhopper Security), Somair Ansar(Calif), Abhijeet Singh (linkedin.com/in/abhiunix/), Omar Cerrito, Jian Zhou, Ye Zhang, Tien-Chih Lin(CyCraft Technology), Josef Korbel (Citadelo)(Talence Security), Narendra Singh@@_3P1C, Soyeon Park(DEVCORE Research Team), Amy Burnett(DEVCORE Research Team), Khai Tran(DEVCORE Research Team), sherkito(DEVCORE Research Team), Kota Toda(DEVCORE Research Team), HexRabbit@@h3xr4bb1t(DEVCORE Research Team), NiNi@@terrynini38514(DEVCORE Research Team), HvxyZLF, Lance Cain - Offensive Security Engineer, SpecterOps Inc., Gil Portnoy & Henry, Anthony Laou Hine Tsuei@@anarcheuz, Ayaan Ahmad, erdene-och Byambabayar, Niels Hofmans, Alexandre Soleiman, Alexander Tarasikov, Ruslan Dautov, Trung Nguyen@@everping(CyStack), Dave G., Atul R V & Ashmit Sharma, Hcamael, 章鱼哥 （aipyaipy.com）@@aipy, Aswin Kumar Gokulakannan, Surya Narayan Kushwaha, Richard Zana, Cem Onat Karagun, 이재영, Igor Ushakov, Wang Yu(STAR Labs SG Pte), Ji'an Zhou, Mingxuan Yang, Calif Research, Ernesto Martínez García, Amy (amys.website), Robert Mindo, He Wei (ギカク)(aipyaipy), 章鱼哥@@aipy(aipyaipy), Jex Amro, yk lin@@pixiepointsec, Robert Tran, Mickey Jin@@patch1t, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), Matej Moravec@@MacejkoMoravec, Sindre Sorhus, Hcamael(Stripe), 章鱼哥 （aipyaipy.com）@@aipy(Stripe), JC Alvarado(Stripe), Jacob Hazak, @@pixiepointsec, Ilya Andr (andrd3v), Asaf Cohen, Junming C.(Chapoly1305), Alfredo Pesoli@@__rev(Bynar), wdszzml, Atuin Automated Vulnerability Discovery Engine, Bob Gendler(the National Institute of Standards), Technology, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Kitten Food, Calif.io in collaboration with Claude, Anthropic Research, Csaba Fitzl@@theevilbit(Iru), Bruce Dang(Calif), Pinak Oza, tamdao, Irvin Wang, David Ige - Beryllium Security, Pavan Nallamothu, Jared Reyes, Gergely Kalman@@gergely_kalman, Matthew Schneider, XBreach.ai(Nosebeard Labs), Dallas Dubs(Nosebeard Labs), Jonathan Bar Or@@yo_yo_yo_jbo, Stanislav Jelezoglo(Positive Technologies), Gandalf4a(PKU), Dhiyanesh Selvaraj@@redroot97, hxr1(STAR Labs SG Pte), Hiroki Imai (LAC Co.(STAR Labs SG Pte), Ltd.)(STAR Labs SG Pte), Mahmoud Abdelmoniem(ThreatBook), Hyunwoo Kim@@v4bel(ThreatBook), Vladislav Shevchenko (Positive Technologies)(STAR Labs SG Pte), Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Prathamesh Walunj, Atul R V, Dan Raviv, Adam Franke(CyStack), Rodolphe Brunetti@@eisw0lf(Lupus Nova), Arni Hardarson (Neonix Security), Stuart Wallace, Jorge Welch@@jorgwelch, Ashish Kunwar(CyStack), Rajdip Dey Sarkar, Aaron Grattafiori - NVIDIA AI Red Team(Nosebeard Labs), Arash Ale Ebrahim(SCy), ret2happy, Jiri Ha, Seiji Sakurai@@HeapSmasher, Ashish Kunwar(MurphySec), Alex Radocea, Do Young Park, wwwlk, Artem Dinaburg(Trail of Bits via Anthropic CVD), Cantina, Gurpreet Shergill(Calif), Janggoon Lee(Out of Bounds), Mateusz Krzywicki (iVerify.io), Josef Korbel (Citadelo)(Cisco Talos), Thomas Guillem, Shubham Chaskar, Seonwook Kim, lattice, Henock Habte, Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), Utkarsh Pal(Talence Security), Narendra Singh@@_3P1C(Calif), Josef Korbel (Citadelo)(Calif), Dung Do@@_piers2(Calif), Muhamad Syaiful, Josef Korbel(Calif), Mohit Negi

Affected Software

14 affected componentsFixes available
Apple visionOS<26.6
26.6
Apple tvOS<26.6
26.6
Apple macOS Tahoe<26.6
26.6
Apple macOS Sequoia<15.7.8
15.7.8
Apple iOS<26.6
26.6
Apple iPadOS<26.6
26.6
Apple iOS<18.7.10
18.7.10
Apple iPadOS<18.7.10
18.7.10
Apple iPadOS<26.6
Apple iPhone OS<26.6
Apple macOS>=15.0<15.7.8
Apple macOS>=26.0<26.6
Apple tvOS<26.6
Apple visionOS<26.6

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 26.6
  2. Upgrade

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

    Fixed in 15.7.8
  3. Upgrade

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

    Fixed in 18.7.10
  4. Upgrade

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

    Fixed in iOS 18.7.10
  5. Upgrade

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

    Fixed in iPadOS 18.7.10
  6. Upgrade

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

    Fixed in iOS 26.6
  7. Upgrade

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

    Fixed in iPadOS 26.6
  8. Upgrade

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

    Fixed in macOS Sequoia 15.7.8
  9. Upgrade

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

    Fixed in macOS Tahoe 26.6
  10. Upgrade

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

    Fixed in tvOS 26.6
  11. Upgrade

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

    Fixed in visionOS 26.6
  12. Compensating control

    This issue was addressed by using HTTPS when sending information over the network.

Event History

Jul 27, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Description
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionAffected Software
CVE Published
via MITRE·08:13 PM
Data Sourced
via MITRE·08:13 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Aug 17, 2026
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected 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-2026-64771?

CVE-2026-64771 is classified with high severity due to its potential impact on device security and stability.

2

How do I fix CVE-2026-64771?

To mitigate CVE-2026-64771, users should update their Apple devices to the latest software version provided by Apple.

3

What types of vulnerabilities are involved in CVE-2026-64771?

CVE-2026-64771 includes vulnerabilities such as buffer overflow, input validation issues, and race conditions.

4

Which Apple products are affected by CVE-2026-64771?

CVE-2026-64771 affects several Apple products including visionOS, tvOS, iOS, iPadOS, and macOS versions Tahoe and Sequoia.

5

When was CVE-2026-64771 published?

CVE-2026-64771 was published on July 27, 2026.

Company

Resources

Contact

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