CVE-2026-84593: Use After Free
Published Sep 14, 2026
·Updated
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 27 and iPadOS 27. An app may be able to cause unexpected system termination.
Other sources
Accelerate Framework. An out-of-bounds write issue was addressed with improved bounds checking.
— Apple
Accessibility. A privacy issue was addressed with improved handling of user preferences.
— Apple
Accessibility. This issue was addressed with improved data protection.
— Apple
Accounts. An authorization issue was addressed with improved state management.
— Apple
APFS. An out-of-bounds write issue was addressed with improved bounds checking.
— Apple
Credit
Cem Onat Karagun, an anonymous researcher, Zhongcheng Li (CK01), Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), tamdao, Franco Belman at Blackwing Intelligence, Richard Zana, Meta Red Team X - Nik Tsytsarkin, Alexandre Borges, Ilya Andr (andrd3v), Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Anthropic Research, Peter Malone, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Yongdae Kim @ SysSec, KAIST, CVE-2026-65414, Sindre Sorhus(Positive Technologies), Ilya Andr (andrd3v)(Positive Technologies), Asaf Cohen, Stanislav Jelezoglo, Heiner Gerdes, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Nik Tsytsarkin, Chris Bailey - Short Circuit, Siyeong kim, AL Najafi, Stuart Wallace, Pavan Nallamothu, ret2happy, Meta Product Security, Mustafa Calap@@ordinal0, dbg.re), stratan@@5tratan, Rahul Raj, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Tommy DeVoss@@thedawgyg(Braze Security Team), flower xu, Adriatik Raci, PETOWORKS의 Bugeun Choi@@Bugeun, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Hyunwoo Kim@@v4bel, Junyeong Lee (jylab.github.io), Merrick Hare, Aditya Kumar, John Nzyuko Uvyu, Narendra Singh@@_3P1C, Geoffrey Lovelace, Bruce Dang(Calif), Jiyong Yang, Vishal Patidar, Roman Zabicki, Luke Symons, Justin O'Leary, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, David Strnadel, Seiji Sakurai@@HeapSmasher, Csaba Fitzl@@theevilbit(Iru), genter0(Calif), Svetoslav Stolarov & Aisa Fox(Calif), Josh Maine(Calif), Dun, Bernhard Jackiewicz, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Ryan Hileman via Xint Code (xint.io), Bhaswanth Chigurupati, Tristan Madani@@TristanInSec(Talence Security), Hiroki Imai (LAC Co., Ltd.), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), R4mbb(KRsecurity), Vladislav Shevchenko (Positive Technologies), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Kitten Food, Sindre Sorhus, Morris Richman@@morrisinlife, Tristan Brennan, Myeonghun Pak, Nathaniel Oh@@calysteon, Alan Banderas@@creeper4004, Matthew Zamat, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Drin Raci(sentry), Yiğit Can YILMAZ@@yilmazcanyigit, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Sindre Sorhus(IES Red Team), Hoffcona(IES Red Team), Hongsik Kim (mnur), Bálint Magyar (balintmagyar.com), Issa Sancho, CJ Vana, Gongyu Ma@@Mezone0, Dhiyanesh Selvaraj@@redroot97, Surya Narayan Kushwaha, John Lussier, Filip Olszak, Meshaal@@unrealmesh, Owen Pawling@@owenpawling, Gongyu Ma (twitter@@Mezone0, Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), YingMuo@@YingMuo(DEVCORE Research Team), Abodi Dawoud, Armend Gashi, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Lehan Dilusha Jayasingha, Jérôme Djouder, Seung Je Seong(Positive Technologies), Jakob Pammer, Constantin Clerc(Calif), Shad J(Calif), huami1314@@huamidev(Calif), Huy Nguyen@@34306(Calif), Zeyang Li&Yuxiang Wang(Chongqing Telecom), Bedran Karakoc(Ruhr University Bochum), Tobias Funke(Ruhr University Bochum), Jacopo Clark(Ruhr University Bochum), Katharina Kohls(Ruhr University Bochum), Souta Sugiyama, Viggo Lekdorf, Tomi Garcia (archyxsec), Niels Hofmans, OGINOME Tomohito, Yusuf Kelany, Jian Lee@@speedyfriend433, Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Daniel Febrero, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox)
Affected Software
4 affected componentsFixes available
Apple iOS<27
27
Apple iPadOS<27
27
Apple iPadOS<27.0
Apple iPhone OS<27.0
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 27
Event History
Sep 14, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
CVE Published
via MITRE·08:48 PM
Data Sourced
via MITRE·08:48 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-86882
- CVE-2026-43664
- CVE-2026-64761
- CVE-2026-65404
- CVE-2026-84523
- CVE-2026-86888
- CVE-2026-20683
- CVE-2026-65408
- CVE-2026-65407
- CVE-2026-84519
- CVE-2026-84593
- CVE-2026-86905
- CVE-2026-84583
- CVE-2026-65410
- CVE-2026-84616
- CVE-2026-84607
- CVE-2026-65406
- CVE-2026-86885
- CVE-2026-86879
- CVE-2026-65414
- CVE-2026-84560
- CVE-2026-86878
- CVE-2026-86895
- CVE-2026-86893
- CVE-2026-65399
- CVE-2026-64752
- CVE-2026-86876
- CVE-2026-65344
- CVE-2026-84624
- CVE-2026-43737
- CVE-2026-65412
- CVE-2026-84596
- CVE-2026-84575
- CVE-2026-84489
- CVE-2026-84571
- CVE-2026-43738
- CVE-2026-84511
- CVE-2026-84612
- CVE-2026-84552
- CVE-2026-84510
- CVE-2026-43785
- CVE-2026-84534
- CVE-2026-43688
- CVE-2026-84524
- CVE-2026-84597
- CVE-2026-65409
- CVE-2026-84492
- CVE-2026-84533
- CVE-2026-84606
- CVE-2026-64756
- CVE-2026-84564
- CVE-2026-65395
- CVE-2026-28969
- CVE-2026-65398
- CVE-2026-64760
- CVE-2026-65354
- CVE-2026-28968
- CVE-2026-84566
- CVE-2026-65415
- CVE-2026-84561
- CVE-2026-84630
- CVE-2026-65360
- CVE-2026-65358
- CVE-2026-65377
- CVE-2026-84622
- CVE-2026-43689
- CVE-2026-43687
- CVE-2026-43686
- CVE-2026-65405
- CVE-2026-84530
- CVE-2026-84521
- CVE-2026-65402
- CVE-2026-65359
- CVE-2026-84507
- CVE-2026-86903
- CVE-2026-84602
- CVE-2026-86870
- CVE-2026-86883
- CVE-2026-84628
- CVE-2026-86924
- CVE-2026-65411
- CVE-2026-84598
- CVE-2026-84497
- CVE-2026-84615
- CVE-2026-43695
- CVE-2026-84626
- CVE-2026-84491
- CVE-2026-84629
- CVE-2026-84623
- CVE-2026-28966
- CVE-2026-84532
- CVE-2026-65403
- CVE-2026-84518
- CVE-2026-86897
- CVE-2026-84551
- CVE-2026-84625
- CVE-2026-84603
- CVE-2026-84487
- CVE-2026-84632
- CVE-2026-84620
- CVE-2026-84546
- CVE-2026-84611
- CVE-2026-84526
- CVE-2026-86881
- CVE-2026-84531
- CVE-2026-84600
- CVE-2026-86884
- CVE-2026-86890
- CVE-2026-84609
- CVE-2026-84621
- CVE-2026-86892
- CVE-2026-65348
- CVE-2026-65345
- CVE-2026-84513
- CVE-2026-86886
- CVE-2026-84527
- CVE-2026-65329
- CVE-2026-86887
- CVE-2026-86904
- CVE-2026-84635
- CVE-2026-64753
- CVE-2026-86898
- CVE-2026-64718
- CVE-2026-43674
- CVE-2026-84636
- CVE-2026-84617
Frequently Asked Questions
1
What level of access does an attacker need?
The supplied CVSS vector indicates local access with low privileges is required, and no user interaction is required. The description specifically notes that an app may be able to trigger unexpected system termination.
2
Which Apple platforms are listed as affected?
The affected software list includes Apple iOS, Apple iPadOS, and Apple iPhone OS. The issue is stated to be fixed in iOS 27 and iPadOS 27.
3
What is the documented impact?
The documented impact is unexpected system termination caused by an app. The supplied CVSS vector rates availability impact as high, with no confidentiality or integrity impact.