CVE-2026-64727: Use After Free
Published Jul 27, 2026
·Updated
A type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.6, tvOS 26.6. An app may be able to cause unexpected system termination.
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
Rosyna Keller(Totally Not Malicious Software), Rahul Raj, Dun, Seonung Park, ALTV!ST (altvi.st/), David Strnadel, Franco Belman at Blackwing Intelligence, Anton Pakhunov, Anonymous(TrendAI Zero Day Initiative), Mathis Mansière, an anonymous researcher, James Duffy@@0x4A616D657344, CVE-2026-3784, CVE-2026-3783, Huỳnh Tấn Ngàn, Manuel Fernandez (Stackhopper Security), 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), Daniel Febrero, Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), stratan@@5tratan, wh0am1i, Francisco Knabe, 彦辰, Tien-Chih Lin(CyCraft Technology), 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, 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), Using GLM(Z), Utkarsh Pal, Ignacio Sanmillan@@ulexec, Kwak Kiyong(Talence Security), Song nuri(Talence Security), 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, Adam Franke(CyStack), Ashish Kunwar(CyStack), Trung Nguyen@@everping(CyStack), Dave G., Pinak Oza, Robert Mindo, tamdao, Irvin Wang, David Ige - Beryllium Security, 이재영, Pavan Nallamothu, Jared Reyes, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Richard Zana, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Daniel Williams, Arni Hardarson (Neonix Security), Gergely Kalman@@gergely_kalman, Csaba Fitzl@@theevilbit(Iru), Rajdip Dey Sarkar, Matthew Schneider, Dallas Dubs(Nosebeard Labs), Aaron Grattafiori - NVIDIA AI Red Team(Nosebeard Labs), XBreach.ai(Nosebeard Labs), HvxyZLF, Lance Cain - Offensive Security Engineer, SpecterOps Inc., Gil Portnoy & Henry, Anthony Laou Hine Tsuei@@anarcheuz, Ayaan Ahmad, erdene-och Byambabayar, Niels Hofmans, 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, 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, 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, Bruce Dang(Calif), 杉山 壮太(Z), lattice(Z), Behzad Najjarpour Jabbari@@_G4ru_(Z), Junyeong Lee(Z), Mooth.ai(Z), OGINOME Tomohito(Z), Heiko Kiesel(SEEMOO), TU Darmstadt
Affected Software
4 affected componentsFixes available
Apple tvOS<26.6
26.6
Apple macOS Tahoe<26.6
26.6
Apple macOS>=26.0<26.6
Apple tvOS<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·08:13 PM
Data Sourced
via MITRE·08:13 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-2026-64725
- CVE-2026-43730
- CVE-2026-64747
- CVE-2026-43813
- CVE-2026-43673
- CVE-2026-43744
- CVE-2026-43803
- CVE-2026-43711
- CVE-2026-3784
- CVE-2026-3783
- CVE-2026-64742
- CVE-2026-64740
- 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-2026-43778
- 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-2026-64727
- CVE-2026-43810
- CVE-2026-64775
- CVE-2026-39868
- CVE-2026-64720
- CVE-2026-64751
- CVE-2026-64721
- CVE-2026-64739
- CVE-2026-43706
- CVE-2026-43703
- CVE-2026-64743
- CVE-2026-64724
- CVE-2026-43723
- CVE-2026-43807
- CVE-2026-43729
- CVE-2026-64772
- CVE-2026-64771
- CVE-2026-64774
- CVE-2026-64770
- CVE-2026-64769
- CVE-2026-64768
- CVE-2026-43812
- CVE-2026-64741
- CVE-2026-64766
- CVE-2026-64765
- CVE-2026-64764
- CVE-2026-64763
- CVE-2026-43800
- CVE-2026-43770
- 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-2026-43725
- CVE-2026-43663
- CVE-2026-39872
- CVE-2026-43712
- CVE-2026-64728
- 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-2026-23918
- CVE-2026-64695
- CVE-2026-43781
- CVE-2026-64737
- CVE-2026-43748
- CVE-2026-43776
- CVE-2026-43681
- CVE-2026-43672
- CVE-2026-43763
- CVE-2026-64702
- CVE-2026-64762
- CVE-2026-64707
- CVE-2026-64698
- CVE-2026-64746
- CVE-2026-64734
- CVE-2026-43797
- CVE-2026-43756
- CVE-2026-43693
- CVE-2026-43775
- CVE-2026-43759
- CVE-2026-43802
- CVE-2026-64710
- CVE-2026-39875
- CVE-2026-43698
- 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-2026-64691
- CVE-2026-43682
- CVE-2026-28981
- CVE-2026-43773
- CVE-2026-43767
- CVE-2026-43764
- CVE-2026-64697
- CVE-2026-43710
- CVE-2026-43818
- CVE-2026-43805
- CVE-2026-43782
- CVE-2026-64749
- CVE-2026-64744
- CVE-2026-28982
- CVE-2026-43809
- CVE-2026-43757
- CVE-2026-64723
- CVE-2026-43754
- CVE-2026-4424
- CVE-2026-28973
- CVE-2026-43766
- CVE-2026-64738
- CVE-2026-43806
- CVE-2026-28911
- CVE-2026-43733
- CVE-2026-64722
- CVE-2026-43771
- CVE-2026-43772
- CVE-2026-64711
- CVE-2026-28912
- CVE-2026-43765
- CVE-2026-64731
- 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-2026-64745
- CVE-2026-39873
- CVE-2026-64696
- CVE-2026-64704
- CVE-2026-43774
- CVE-2026-43768
- CVE-2026-64703
- CVE-2026-64699
- CVE-2026-64783
- CVE-2026-64757
- CVE-2026-43804
- CVE-2026-43750
- CVE-2026-28932
Frequently Asked Questions
1
What is the severity of CVE-2026-64727?
CVE-2026-64727 has a critical severity rating of 9.8.
2
How do I fix CVE-2026-64727?
To fix CVE-2026-64727, update to macOS Tahoe 26.6 or tvOS 26.6.
3
What issues does CVE-2026-64727 address?
CVE-2026-64727 addresses a type confusion issue with improved memory handling that could lead to unexpected system termination.
4
What platforms are affected by CVE-2026-64727?
CVE-2026-64727 affects Apple tvOS and Apple macOS Tahoe.
5
What types of vulnerabilities are associated with CVE-2026-64727?
CVE-2026-64727 is associated with vulnerabilities like Use After Free, Buffer Overflow, Input Validation, Integer Overflow, and Race Condition.