CVE-2026-43759: Use After Free
Published Jul 27, 2026
·Updated
Accounts Framework. This issue was addressed with improved data protection.
Other sources
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
An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.6, watchOS 26.6. An app may be able to access sensitive user data.
— MITRE
apache. This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org.
— Apple
Credit
Rosyna Keller(Totally Not Malicious Software), Rahul Raj, Dun, Franco Belman at Blackwing Intelligence, Seonung Park, ALTV!ST (altvi.st/), David Strnadel, Anton Pakhunov, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Daniel Febrero, Daniel Williams, Anonymous(TrendAI Zero Day Initiative), ret2happy, Mathis Mansière, an anonymous researcher, James Duffy@@0x4A616D657344, 이재영, Rajdip Dey Sarkar, Arni Hardarson (Neonix Security), Nathaniel Oh@@calysteon, 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, Ashish Kunwar(MurphySec), 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@@0xjohnny(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@@0xjohnny, 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, YingMuo@@YingMuo(DEVCORE Research Team), Tristan Rousseau, Vladislav Shevchenko (Positive Technologies), Dun(DARKNAVY), deepsec@@DarkNavyOrg(DARKNAVY), Tristan Madani@@TristanInSec(Talence Security), Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), 彦辰, stratan@@5tratan, Nik Tsytsarkin, dr3dd, Gurpreet Shergill, Merrick Hare, Drinor Selmanaj (Sentry), Khai Tran, John Lussier, Rhyru9, Kwak Kiyong, Song Nuri, Utkarsh Pal(Almamater Technologies), 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, Luke Francis(Z), Francisco Alonso@@revskills(Z), Shubham Chaskar(Z), Jiyong Yang@@Sy2n0(Z), 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, Muhamad Syaiful, Behzad Najjarpour Jabbari@@_G4ru_, OpenAI Codex Security - Amy Burnett, Aaron Grattafiori - NVIDIA AI Red Team, Vitaly Simonovich, Christian Meurer Xavier, Josef Korbel, Niels Hofmans, OGINOME Tomohito, Idan Masas, CVE-2026-28979, Shaheen Fazim, Adam Franke(CyStack), Ashish Kunwar(CyStack), Trung Nguyen@@everping(CyStack), Dave G., Bartlomiej Dmitruk(striga), Stanislaw Strzalkowski(isec), Pinak Oza, Robert Mindo, 章鱼哥.com@@aipyaipy, Chris Bailey - Short Circuit, Stuart Wallace, tamdao, Rishabh Jain (rjcyber)(cyberplanet), Irvin Wang, David Ige - Beryllium Security, lokerxx(Economics), Narendra Singh@@_3P1C(Economics), Lyutoon(Economics), Jordy Zomer@@pwningsystems(Economics), Richard Zana(Economics), Aswin Kumar Gokulakannan(Economics), George Stergiopoulos(Economics), InfoSec lab(Economics), Athens University(Economics), Business, Greece, Pavan Nallamothu, Jared Reyes, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Richard Zana, Gergely Kalman@@gergely_kalman, Csaba Fitzl@@theevilbit(Iru), Kraken Cryptocurrency Exchange(Nosebeard Labs), Matthew Schneider, Dallas Dubs(Nosebeard Labs), Aaron Grattafiori - NVIDIA AI Red Team(Nosebeard Labs), XBreach.ai(Nosebeard Labs), Yongyue WANG AKA Brian.W(OKX security), Roman Zabicki(Nosebeard Labs), Katika Mohaseen(Nosebeard Labs), an anonymous researcher(Nosebeard Labs), Lance Cain - Offensive Security Engineer, SpecterOps Inc., Mahmoud Abdelmoniem(DBAppSecurity's WeBin lab), Kujtim Kryeziu(DBAppSecurity's WeBin lab), 이재영(Nosebeard Labs), Ilya Andr (andrd3v)(Nosebeard Labs), beist, Gil Portnoy & Henry, Anthony Laou Hine Tsuei@@anarcheuz, Ayaan Ahmad, erdene-och Byambabayar, Manuel Fernandez (Stackhopper Security), hxr1, Alexandre Soleiman, Alexander Tarasikov, Ruslan Dautov, Atul R V & Ashmit Sharma, Hcamael, 章鱼哥 （aipyaipy.com）@@aipy, Aswin Kumar Gokulakannan, Surya Narayan Kushwaha, Cem Onat Karagun, Alfredo Pesoli@@__rev(Bynar), Surya Kushwaha, Igor Ushakov, Ashish Kunwar, Wang Yu(STAR Labs SG Pte), Ji'an Zhou, Mingxuan Yang, Calif Research, Ernesto Martínez García, CVE-2026-4424, Amy (amys.website), He Wei (ギカク)(aipyaipy), 章鱼哥@@aipy(aipyaipy), Jex Amro, yk lin@@pixiepointsec, wh0am1i, Robert Tran, Mickey Jin@@patch1t, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), Matej Moravec@@MacejkoMoravec, Aethel-Systems(Chongqing Telecom), Chanwit Muenprakoddee (ChemIndy)(Chongqing Telecom), 九宫格(Chongqing Telecom), Narcis Oliveras Fontàs, Sindre Sorhus, Francisco Knabe, Zachary Neal(Stripe), Hcamael(Stripe), 章鱼哥 (aipyaipy.com)@@aipy(Stripe), JC Alvarado(Stripe), Jacob Hazak, @@pixiepointsec, Ilya Andr (andrd3v), Asaf Cohen, Junming C.(Chapoly1305), wdszzml, Atuin Automated Vulnerability Discovery Engine, Bob Gendler(the National Institute of Standards), Technology, RedRays Security Team, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, He Wei (ギカク)(Cisco Talos), Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Kitten Food, Calif.io in collaboration with Claude, Anthropic Research, Tien-Chih Lin(CyCraft Technology), Tien-Chih Lin, Bruce Dang(Calif), Heiko Kiesel(SEEMOO), TU Darmstadt
Affected Software
4 affected componentsFixes available
Apple WatchOS<26.6
26.6
Apple macOS Tahoe<26.6
26.6
Apple macOS>=26.0<26.6
Apple WatchOS<26.6
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 26.6
Event History
Jul 27, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
Description
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
DescriptionAffected 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
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-64733
- CVE-2026-43801
- CVE-2026-28928
- CVE-2026-65407
- CVE-2026-64725
- CVE-2026-43730
- CVE-2026-64747
- CVE-2026-43813
- CVE-2026-64746
- CVE-2026-64734
- CVE-2026-43673
- CVE-2026-43744
- CVE-2026-43803
- CVE-2026-43711
- CVE-2026-43759
- CVE-2026-43702
- CVE-2026-3784
- CVE-2026-3783
- CVE-2026-43758
- CVE-2026-43714
- CVE-2026-64742
- CVE-2026-43796
- CVE-2026-64692
- CVE-2026-43780
- CVE-2026-64716
- CVE-2026-64758
- CVE-2026-64754
- CVE-2026-64693
- CVE-2026-43743
- CVE-2026-43805
- CVE-2026-43778
- CVE-2026-64709
- CVE-2026-64735
- CVE-2026-43739
- CVE-2026-43816
- CVE-2026-43822
- CVE-2026-64729
- CVE-2026-43814
- CVE-2026-64700
- CVE-2026-43799
- CVE-2026-28931
- CVE-2026-43817
- CVE-2026-43724
- CVE-2026-43769
- CVE-2026-43810
- CVE-2026-64775
- CVE-2026-39868
- CVE-2026-64720
- CVE-2026-64751
- CVE-2026-64721
- CVE-2026-65357
- CVE-2026-65371
- CVE-2026-43808
- CVE-2026-64717
- CVE-2026-28973
- CVE-2026-64739
- CVE-2026-43706
- CVE-2026-43703
- CVE-2026-64743
- CVE-2026-64724
- CVE-2026-43723
- CVE-2026-43807
- CVE-2026-64741
- CVE-2026-64766
- CVE-2026-64765
- CVE-2026-64764
- CVE-2026-64763
- CVE-2026-43800
- CVE-2026-43704
- CVE-2026-43740
- CVE-2026-43735
- CVE-2026-64713
- CVE-2026-43734
- CVE-2026-43726
- CVE-2026-43709
- CVE-2026-43742
- CVE-2026-43699
- CVE-2026-64730
- CVE-2026-43732
- CVE-2026-43821
- CVE-2026-43731
- CVE-2026-43715
- CVE-2026-43727
- CVE-2026-64783
- CVE-2026-43725
- CVE-2026-43663
- CVE-2026-39872
- CVE-2026-43712
- CVE-2026-64728
- CVE-2026-43676
- CVE-2026-64757
- CVE-2026-43713
- CVE-2026-43708
- CVE-2026-43707
- CVE-2026-43705
- CVE-2026-43701
- CVE-2026-43745
- CVE-2026-43700
- CVE-2026-43720
- CVE-2026-64718
- CVE-2026-43721
- CVE-2026-28979
- CVE-2026-43718
- CVE-2026-43717
- CVE-2026-64719
- CVE-2026-64726
- CVE-2026-43819
- CVE-2026-43749
- CVE-2026-64767
- CVE-2026-43815
- CVE-2026-23918
- CVE-2026-64695
- CVE-2026-43781
- CVE-2026-64737
- CVE-2026-65353
- CVE-2026-43748
- CVE-2026-43776
- CVE-2026-43681
- CVE-2026-43761
- CVE-2026-43672
- CVE-2026-43763
- CVE-2026-64702
- CVE-2026-64762
- CVE-2026-64707
- CVE-2026-64698
- CVE-2026-43797
- CVE-2026-43756
- CVE-2026-43693
- CVE-2026-43775
- CVE-2026-28899
- CVE-2026-43802
- CVE-2026-64710
- CVE-2026-39875
- CVE-2026-64701
- CVE-2026-64708
- CVE-2026-43783
- CVE-2026-64776
- CVE-2026-64694
- CVE-2026-43747
- CVE-2026-28945
- CVE-2026-43793
- CVE-2026-43753
- CVE-2026-64740
- CVE-2026-64691
- CVE-2026-43682
- CVE-2026-28981
- CVE-2026-43773
- CVE-2026-43767
- CVE-2026-43764
- CVE-2026-64697
- CVE-2026-43710
- CVE-2026-64705
- CVE-2026-43818
- CVE-2026-43782
- CVE-2026-64749
- CVE-2026-64744
- CVE-2026-28982
- CVE-2026-43809
- CVE-2026-43757
- CVE-2026-64727
- CVE-2026-64723
- CVE-2026-43754
- CVE-2026-4424
- CVE-2026-43766
- CVE-2026-64738
- CVE-2026-43806
- CVE-2026-28911
- CVE-2026-43733
- CVE-2026-43729
- CVE-2026-64772
- CVE-2026-64771
- CVE-2026-64722
- CVE-2026-64774
- CVE-2026-64770
- CVE-2026-64769
- CVE-2026-64768
- CVE-2026-43771
- CVE-2026-43772
- CVE-2026-64711
- CVE-2026-28912
- CVE-2026-43765
- CVE-2026-28933
- CVE-2026-64731
- CVE-2026-43812
- CVE-2026-43694
- CVE-2026-39874
- CVE-2026-43792
- CVE-2026-43779
- CVE-2026-43777
- CVE-2026-43760
- CVE-2026-43728
- CVE-2026-43755
- CVE-2026-43762
- CVE-2026-64745
- CVE-2026-39873
- CVE-2026-64696
- CVE-2026-64704
- CVE-2026-43774
- CVE-2026-43770
- CVE-2026-43768
- CVE-2026-84562
- CVE-2026-64703
- CVE-2026-64699
- CVE-2026-65375
- CVE-2026-43804
- CVE-2026-43750
- CVE-2026-28932
Frequently Asked Questions
1
What is the severity of CVE-2026-43759?
CVE-2026-43759 has a medium severity rating of 5.5 according to the CVSS v3.1 scoring system.
2
How do I fix CVE-2026-43759?
To fix CVE-2026-43759, ensure that you update to the latest version of the affected software as outlined in the security patches provided by Apple.
3
What are the potential risks associated with CVE-2026-43759?
CVE-2026-43759 could lead to unauthorized access to sensitive user data due to issues like buffer overflow and improper path validation.
4
What software is affected by CVE-2026-43759?
CVE-2026-43759 affects Apple WatchOS and the macOS Tahoe versions provided by Apple.
5
What types of vulnerabilities are associated with CVE-2026-43759?
CVE-2026-43759 includes vulnerabilities like Use After Free, Buffer Overflow, Race Condition, and Infoleak.