CVE-2026-84562: Buffer Overflow
Published Jul 27, 2026
·Updated
A race condition was addressed with additional validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to access protected user data.
Other sources
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
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
Adam Franke(CyStack), Ashish Kunwar(CyStack), Trung Nguyen@@everping(CyStack), Rosyna Keller(Totally Not Malicious Software), Dave G., Bartlomiej Dmitruk(striga), Stanislaw Strzalkowski(isec), Narendra Singh@@_3P1C, Peter Malone, Rahul Raj, Pinak Oza, Robert Mindo, 章鱼哥.com@@aipyaipy, Chris Bailey - Short Circuit, N.M.Praveen Nawarathne@@zblockrat, Stuart Wallace, Vladislav Shevchenko (Positive Technologies), an anonymous researcher, tamdao, Franco Belman at Blackwing Intelligence, Dun, Rishabh Jain (rjcyber)(cyberplanet), Irvin Wang, Nicolas Rabrenovic, impost0r (ret2plt), 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, 이재영, Pavan Nallamothu, Jared Reyes, John Lussier, Seonung Park, ALTV!ST (altvi.st/), David Strnadel, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Richard Zana, Nathaniel Oh@@calysteon, Anton Pakhunov, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Daniel Febrero, Daniel Williams, Arni Hardarson (Neonix Security), Gergely Kalman@@gergely_kalman, Anonymous(TrendAI Zero Day Initiative), ret2happy, Mathis Mansière, Csaba Fitzl@@theevilbit(Iru), Rajdip Dey Sarkar, James Duffy@@0x4A616D657344, Kraken Cryptocurrency Exchange(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(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), CVE-2026-3784, CVE-2026-3783, HvxyZLF, Lance Cain - Offensive Security Engineer, SpecterOps Inc., Tommy DeVoss@@thedawgyg(Braze Security Team), Mahmoud Abdelmoniem(DBAppSecurity's WeBin lab), Kujtim Kryeziu(DBAppSecurity's WeBin lab), 이재영(Nosebeard Labs), Ilya Andr (andrd3v)(Nosebeard Labs), beist, Hyunwoo Kim@@v4bel, Gil Portnoy & Henry, Anthony Laou Hine Tsuei@@anarcheuz, Ayaan Ahmad, erdene-och Byambabayar, Niels Hofmans, Manuel Fernandez (Stackhopper Security), Ilya Andr (andrd3v)(Positive Technologies), Stanislav Jelezoglo, Somair Ansar(Calif), Josh Maine(Calif), Johnny Franks@@0xjohnny, hxr1, Alexandre Soleiman, Alexander Tarasikov, Ruslan Dautov, Redon Gashi, 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), Tristan Madani@@TristanInSec(Talence Security), Surya Kushwaha, Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Arni Hardarson, Jonathan Alush-Aben, 진규정 (Gyujeong Jin, @@G1uN4sh, PETOWORKS의 Bugeun Choi@@Bugeun, Geonha Lee@@leegn4a, Igor Ushakov, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Ashish Kunwar, Hiroki Imai (LAC Co., Ltd.), Ryan Hileman via Xint Code (xint.io), Ashish Kunwar(MurphySec), f0r(MurphySec), Feng Xue(ThreatBook), XGPT(ThreatBook), Mahmoud Abdelmoniem, Wang Yu, Lyutoon, DARKNAVY@@DarkNavyOrg, Fábio Luís@@scanpt, Adam Doupé(ASU SEFCOM), 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, Daniele Castronovo, Michal Kosiorek, 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), Dun(STAR Labs SG Pte), Asjid Kalam@@odinshell, Abhijeet Singh (linkedin.com/in/abhiunix/), Omar Cerrito, Wang Yu(STAR Labs SG Pte), Ji'an Zhou, Mingxuan Yang, Ye Zhang, Jian Zhou, Calif Research, Ernesto Martínez García, Lukas Gerlach, YingMuo@@YingMuo(DEVCORE Research Team), Tristan Rousseau, Dun(DARKNAVY), deepsec@@DarkNavyOrg(DARKNAVY), CVE-2026-4424, Amy (amys.website), He Wei (ギカク)(aipyaipy), 章鱼哥@@aipy(aipyaipy), Jex Amro, Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), yk lin@@pixiepointsec, stratan@@5tratan, 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), Nik Tsytsarkin, 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), Kwak Kiyong, Song Nuri, Kagami Rosylight(Mozilla), 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), Gia Bui@@yabeow(Calif), Milad Nasr, Nicholas Carlini with Claude, Anthropic, Heiko Kiesel(SEEMOO), TU Darmstadt, Brian Carpenter, OGINOME Tomohito, Shaheen Fazim
Affected Software
2 affected componentsFixes available
Apple macOS Tahoe<26.6
26.6
Apple macOS<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
Sep 14, 2026
CVE Published
via MITRE·08:50 PM
Data Sourced
via MITRE·08:50 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-43819
- CVE-2026-43749
- CVE-2026-64733
- CVE-2026-64767
- CVE-2026-43815
- CVE-2026-23918
- CVE-2026-64695
- CVE-2026-43801
- CVE-2026-43781
- CVE-2026-64737
- CVE-2026-65353
- CVE-2026-43748
- CVE-2026-28928
- CVE-2026-65407
- CVE-2026-43776
- CVE-2026-43681
- CVE-2026-43761
- CVE-2026-43672
- CVE-2026-43763
- CVE-2026-64702
- CVE-2026-64725
- CVE-2026-43730
- CVE-2026-64747
- CVE-2026-64762
- CVE-2026-64707
- CVE-2026-64698
- CVE-2026-43813
- CVE-2026-64746
- CVE-2026-64734
- CVE-2026-43797
- CVE-2026-43756
- CVE-2026-43693
- CVE-2026-43673
- CVE-2026-43744
- CVE-2026-43803
- CVE-2026-43775
- CVE-2026-43759
- CVE-2026-43711
- CVE-2026-43702
- CVE-2026-28899
- CVE-2026-43802
- CVE-2026-64710
- CVE-2026-39875
- CVE-2026-64701
- CVE-2026-3784
- CVE-2026-3783
- CVE-2026-43758
- 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-2026-43714
- CVE-2026-64740
- CVE-2026-43796
- CVE-2026-64691
- CVE-2026-64692
- 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-2026-43780
- CVE-2026-43818
- CVE-2026-64716
- CVE-2026-64758
- CVE-2026-64754
- CVE-2026-64693
- CVE-2026-43805
- CVE-2026-43782
- CVE-2026-64749
- CVE-2026-64744
- CVE-2026-43778
- CVE-2026-28982
- 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-2026-43809
- CVE-2026-43757
- CVE-2026-43769
- CVE-2026-64727
- CVE-2026-43810
- CVE-2026-64775
- CVE-2026-64723
- CVE-2026-64720
- CVE-2026-43754
- CVE-2026-64751
- CVE-2026-64721
- CVE-2026-65357
- CVE-2026-65371
- CVE-2026-43808
- CVE-2026-64717
- CVE-2026-4424
- CVE-2026-28973
- CVE-2026-64739
- CVE-2026-43766
- CVE-2026-64743
- CVE-2026-64738
- CVE-2026-43806
- CVE-2026-64724
- CVE-2026-43723
- 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-2026-64766
- CVE-2026-64765
- CVE-2026-64764
- CVE-2026-64763
- CVE-2026-43779
- CVE-2026-43777
- CVE-2026-43760
- CVE-2026-43728
- CVE-2026-43755
- CVE-2026-43762
- CVE-2026-64745
- CVE-2026-43800
- 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-2026-64713
- CVE-2026-64730
- CVE-2026-64728
- CVE-2026-64783
- CVE-2026-64757
- CVE-2026-43804
- CVE-2026-43821
- CVE-2026-64718
- CVE-2026-64719
- CVE-2026-64726
- CVE-2026-43750
- CVE-2026-28932
Frequently Asked Questions
1
What level of access does an attacker need to exploit this issue?
The CVSS vector indicates local access and low privileges are required. User interaction is not required, but exploitation has high attack complexity.
2
What is the documented impact if exploitation succeeds?
A malicious app may be able to access protected user data. The CVSS vector rates confidentiality impact as high and does not indicate integrity or availability impact.
3
Which macOS release contains the fix?
The issue is fixed in macOS Tahoe 26.6.