CVE-2026-43807: Use After Free

Published Jun 29, 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 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious accessory may be able to cause unexpected app termination.

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

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

— Apple

AirDrop. A reachable assertion was addressed with improved input validation.

— Apple

Credit

Dun, Seonung Park, ALTV!ST (altvi.st/), David Strnadel, Franco Belman at Blackwing Intelligence, Anton Pakhunov, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Daniel Febrero, Daniel Williams, Anonymous(TrendAI Zero Day Initiative), Mathis Mansière, an anonymous researcher, Rahul Raj, James Duffy@@0x4A616D657344, 이재영, Rajdip Dey Sarkar, Arni Hardarson (Neonix Security), CVE-2026-3784, CVE-2026-3783, HvxyZLF, 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, Lyutoon, f0r(MurphySec), Feng Xue(ThreatBook), XGPT(ThreatBook), Mahmoud Abdelmoniem, Wang Yu, Hiroki Imai (LAC Co., Ltd.), DARKNAVY@@DarkNavyOrg, Fábio Luís@@scanpt, Nicolas Rabrenovic, Pasquale Scola(STAR Labs SG Pte), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(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, 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, Somair Ansar(Calif), Asjid Kalam@@odinshell, Abhijeet Singh (linkedin.com/in/abhiunix/), Omar Cerrito, impost0r (ret2plt), Hyunwoo Kim@@v4bel, Ryan Hileman via Xint Code (xint.io), Vladislav Shevchenko (Positive Technologies)(Baidu Security), Jian Zhou, Ye Zhang, N.M.Praveen Nawarathne@@zblockrat, Lukas Gerlach, Tristan Madani@@TristanInSec(Talence Security), Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), 彦辰, stratan@@5tratan, 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)(Talence Security), Gia Bui@@yabeow(Calif), Narendra Singh@@_3P1C, CVE-2026-43709, Юлия Мерцалова, Tommy DeVoss@@thedawgyg(Braze Security Team), Kagami Rosylight(Mozilla), Nan Wang@@eternalsakura13, Brian Carpenter, Milad Nasr, Nicholas Carlini with Claude, Anthropic, 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(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), Utkarsh Pal, Ignacio Sanmillan@@ulexec, Kwak Kiyong(Talence Security), Song nuri(Talence Security), Mateusz Krzywicki (iVerify.io)(Braze Security Team), dr3dd(Braze Security Team), Jody Ritonga, Behzad Najjarpour Jabbari@@_G4ru_, OpenAI Codex Security - Amy Burnett, Aaron Grattafiori - NVIDIA AI Red Team, Vitaly Simonovich, Christian Meurer Xavier, Josef Korbel, OGINOME Tomohito, Idan Masas, CVE-2026-28979, Shaheen Fazim, Rosyna Keller(Totally Not Malicious Software), YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Ashish Kunwar, hxr1, CVE-2026-4424, wh0am1i, Francisco Knabe, Josef Korbel (Citadelo), Tristan Madani, Soyeon Park, Amy Burnett, Heiko Kiesel(SEEMOO), TU Darmstadt, Manuel Fernandez (Stackhopper Security), Tien-Chih Lin(CyCraft Technology), Pinak Oza, Robert Mindo, tamdao, Irvin Wang, David Ige - Beryllium Security, Pavan Nallamothu, Jared Reyes, Richard Zana, Gergely Kalman@@gergely_kalman, Csaba Fitzl@@theevilbit(Iru), Matthew Schneider, XBreach.ai(Nosebeard Labs), Dallas Dubs(Nosebeard Labs), Lance Cain - Offensive Security Engineer, SpecterOps Inc., Jonathan Bar Or@@yo_yo_yo_jbo, Anthony Laou Hine Tsuei@@anarcheuz, Gil Portnoy & Henry, Ayaan Ahmad, erdene-och Byambabayar, Niels Hofmans, Stanislav Jelezoglo(Positive Technologies), Trung Nguyen@@everping(CyStack), Dave G., Atul R V & Ashmit Sharma, Hcamael, 章鱼哥 （aipyaipy.com）@@aipy, Aswin Kumar Gokulakannan, Surya Narayan Kushwaha, Cem Onat Karagun, Gandalf4a(PKU), Dhiyanesh Selvaraj@@redroot97, hxr1(STAR Labs SG Pte), Hiroki Imai (LAC Co.(STAR Labs SG Pte), Ltd.)(STAR Labs SG Pte), Igor Ushakov, Mahmoud Abdelmoniem(ThreatBook), Hyunwoo Kim@@v4bel(ThreatBook), Wang Yu(STAR Labs SG Pte), Ernesto Martínez García, Calif Research, Ji'an Zhou, Mingxuan Yang, Vladislav Shevchenko (Positive Technologies)(STAR Labs SG Pte), Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Ruslan Dautov, Prathamesh Walunj, Amy (amys.website), Atul R V, Robert Tran, Mickey Jin@@patch1t, Dan Raviv, 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, Asaf Cohen, Junming C.(Chapoly1305), Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Calif.io in collaboration with Claude, Anthropic Research, Kitten Food, Bruce Dang(Calif), Adam Franke(CyStack), yk lin@@pixiepointsec, wdszzml(Bynar), Atuin Automated Vulnerability Discovery Engine(Bynar), Alfredo Pesoli@@__rev(Bynar), Song Nuri(Talence Security), Maher Azzouzi(Calif), Tuan(Calif), Duc(Calif), Evan Lambert

Affected Software

16 affected componentsFixes available
Apple WatchOS<26.6
26.6
Apple visionOS<26.6
26.6
Apple tvOS<26.6
26.6
Apple macOS Sequoia<15.7.8
15.7.8
Apple macOS Sonoma<14.8.8
14.8.8
Apple macOS Tahoe<26.5.2
26.5.2
Apple iOS<26.5.2
26.5.2
Apple iPadOS<26.5.2
26.5.2
Apple iPadOS<26.5.2
Apple iPhone OS<26.5.2
Apple macOS>=14.0<14.8.8
Apple macOS>=15.0<15.7.8
Apple macOS>=26.0<26.5.2
Apple tvOS<26.6
Apple visionOS<26.6
Apple WatchOS<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 14.8.8
  4. Upgrade

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

    Fixed in 26.5.2

Event History

Jun 29, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
Weakness
Updated
via Apple·12:00 AM
WeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Affected Software
Jul 27, 2026
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionAffected Software
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
WeaknessAffected Software
CVE Published
via MITRE·08:12 PM
Data Sourced
via MITRE·08:12 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Aug 17, 2026
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
WeaknessAffected 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-2026-43807?

CVE-2026-43807 is rated as critical with a severity score of 9.8 on the CVSS scale.

2

How do I fix CVE-2026-43807?

To resolve CVE-2026-43807, update your devices to iOS 26.5.2, iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, or watchOS 26.6.

3

What is the impact of CVE-2026-43807?

CVE-2026-43807 may allow a malicious accessory to cause unexpected termination of applications.

4

Which software is affected by CVE-2026-43807?

CVE-2026-43807 affects several Apple software products including iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, visionOS, and watchOS.

5

What vulnerability types are associated with CVE-2026-43807?

CVE-2026-43807 is associated with vulnerabilities such as buffer overflow, use after free, input validation issues, and race conditions.

Company

Resources

Contact

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