CVE-2026-43764: Buffer Overflow
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 integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
— 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
Omar Cerrito, Adam Franke(CyStack), Ashish Kunwar(CyStack), Trung Nguyen@@everping(CyStack), Rosyna Keller(Totally Not Malicious Software), Dave G., Юлия Мерцалова, Peter Malone, Rahul Raj, Pinak Oza, Robert Mindo, an anonymous researcher, tamdao, Franco Belman at Blackwing Intelligence, Dun, Irvin Wang, Nicolas Rabrenovic, impost0r (ret2plt), David Ige - Beryllium Security, 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), Mathis Mansière, Csaba Fitzl@@theevilbit(Iru), Rajdip Dey Sarkar, James Duffy@@0x4A616D657344, Matthew Schneider, Dallas Dubs(Nosebeard Labs), Aaron Grattafiori - NVIDIA AI Red Team(Nosebeard Labs), XBreach.ai(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), CVE-2026-3784, CVE-2026-3783, HvxyZLF, Lance Cain - Offensive Security Engineer, SpecterOps Inc., 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@@zeroxjf, 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, Tristan Madani@@TristanInSec(Talence Security), 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), 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@@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), Dun(STAR Labs SG Pte), Asjid Kalam@@odinshell, Abhijeet Singh (linkedin.com/in/abhiunix/), Wang Yu(STAR Labs SG Pte), Ji'an Zhou, Mingxuan Yang, Ye Zhang, Jian Zhou, Calif Research, Ernesto Martínez García, N.M.Praveen Nawarathne@@zblockrat, Lukas Gerlach, 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, Sindre Sorhus, Francisco Knabe, 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, Tien-Chih Lin(CyCraft Technology), Bruce Dang(Calif), Kwak Kiyong, Song Nuri, Kagami Rosylight(Mozilla), 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, Aaron Grattafiori - NVIDIA AI Red Team, 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, wdszzml(Bynar), Atuin Automated Vulnerability Discovery Engine(Bynar)
Affected Software
6 affected componentsFixes available
Apple macOS Tahoe<26.6
26.6
Apple macOS Sequoia<15.7.8
15.7.8
Apple macOS Sonoma<14.8.8
14.8.8
Apple macOS>=14.0<14.8.8
Apple macOS>=15.0<15.7.8
Apple macOS>=26.0<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 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.7.8 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.8.8
Event History
Jul 27, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
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
DescriptionWeakness
Updated
via Apple·12:00 AM
Description
CVE Published
via MITRE·08:12 PM
Data Sourced
via MITRE·08:12 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-43819
- CVE-2026-43749
- CVE-2026-64733
- CVE-2026-64767
- CVE-2026-23918
- CVE-2026-64695
- CVE-2026-43801
- CVE-2026-43781
- CVE-2026-64737
- CVE-2026-43748
- CVE-2026-28928
- CVE-2026-43776
- CVE-2026-43681
- 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-2026-43802
- CVE-2026-64710
- CVE-2026-39875
- CVE-2026-43698
- CVE-2026-3784
- CVE-2026-3783
- CVE-2026-43758
- CVE-2026-64708
- 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-2026-43780
- 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-2026-4424
- 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-2026-64731
- 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-2026-64745
- CVE-2026-43800
- CVE-2026-39873
- CVE-2026-64696
- CVE-2026-64704
- CVE-2026-43774
- CVE-2026-43770
- CVE-2026-43768
- CVE-2026-64703
- CVE-2026-64699
- CVE-2026-43740
- 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
- CVE-2026-28849
- CVE-2026-28936
- CVE-2026-43738
- CVE-2026-28926
- CVE-2025-43325
- CVE-2026-43661
- CVE-2026-39877
- CVE-2026-43724
- CVE-2026-43722
- CVE-2026-39868
- CVE-2026-20672
- CVE-2026-28983
- CVE-2026-28900
- CVE-2026-43703
- CVE-2026-43706
- CVE-2026-43653
- CVE-2026-43807
- CVE-2026-28961
- CVE-2026-28896
- CVE-2026-43665
- CVE-2026-28914
Frequently Asked Questions
1
What is the severity of CVE-2026-43764?
CVE-2026-43764 has a critical severity rating of 9.8 according to the CVSS 3.1 score.
2
What software is affected by CVE-2026-43764?
CVE-2026-43764 affects Apple macOS and its versions including Tahoe, Sequoia, and Sonoma.
3
How do I fix CVE-2026-43764?
To fix CVE-2026-43764, update your Apple macOS to the latest version where the issue has been addressed.
4
What types of vulnerabilities are associated with CVE-2026-43764?
CVE-2026-43764 is associated with vulnerabilities including buffer overflow, race condition, use after free, and input validation.
5
What is the impact of CVE-2026-43764?
The impact of CVE-2026-43764 includes potential unauthorized access to sensitive data or system resources due to vulnerabilities in the accounts framework.