CVE-2026-64779: Use After Free

Published Aug 17, 2026
·
Updated

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Other sources

Accelerate Framework. An out-of-bounds write issue was addressed with improved bounds checking.

— Apple

Accessibility. This issue was addressed through improved state management.

— Apple

Accounts. An authorization issue was addressed with improved state management.

— Apple

AirDrop. A reachable assertion was addressed with improved input validation.

— Apple

APFS. An out-of-bounds write issue was addressed with improved bounds checking.

— Apple

Credit

Peter Malone, 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), Franco Belman at Blackwing Intelligence, Mustafa Calap@@ordinal0, dbg.re), Meta Red Team X - Nik Tsytsarkin, Ilya Andr (andrd3v), Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Anthropic Research, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), CVE-2026-65414, Stanislav Jelezoglo, Heiner Gerdes, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Nik Tsytsarkin, Chris Bailey - Short Circuit, Siyeong kim, AL Najafi, tamdao, Pavan Nallamothu, ret2happy, Meta Product Security, stratan@@5tratan, Rahul Raj, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Junyeong Lee (jylab.github.io), Merrick Hare, Aditya Kumar, John Nzyuko Uvyu, Narendra Singh@@_3P1C, Geoffrey Lovelace, Bruce Dang(Calif), Tommy DeVoss@@thedawgyg(Braze Security Team), Jiyong Yang, Justin O'Leary, Geonha Lee@@leegn4a, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, f00l@@PPPF00L, 3ndy1@@_3ndy1, Minghao Lin@@Y1nkoc, 云散花折, Arjanit Isufi, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, 이재영, David Strnadel, hxr1, Seiji Sakurai@@HeapSmasher, genter0(Calif), Svetoslav Stolarov & Aisa Fox(Calif), Josh Maine(Calif), Dun, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Ryan Hileman via Xint Code (xint.io), Drinor Selmanaj (Sentry), Surya Narayan Kushwaha, 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), Ashish Kunwar(Positive Technologies), Mikhail Lozhnikov(Positive Technologies), Bhaswanth Chigurupati(STAR Labs SG Pte), Kitten Food, Sindre Sorhus, Morris Richman@@morrisinlife, Stuart Wallace, Tristan Brennan, Myeonghun Pak, Nathaniel Oh@@calysteon, Alan Banderas@@creeper4004, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Yiğit Can YILMAZ@@yilmazcanyigit, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Sindre Sorhus(IES Red Team), Hoffcona(IES Red Team), Hongsik Kim (mnur), Issa Sancho, Ilya Andr (andrd3v)(Positive Technologies), CJ Vana, Gongyu Ma@@Mezone0, Dhiyanesh Selvaraj@@redroot97, Roman Zabicki, John Lussier, Filip Olszak, Owen Pawling@@owenpawling, YingMuo@@YingMuo(DEVCORE Research Team), Lehan Dilusha Jayasingha, Zeyang Li&Yuxiang Wang(Chongqing Telecom), Janggoon Lee(Out of Bounds), OpenAI Codex Security - Amy Burnett, Souta Sugiyama, wwwlk, Henock Habte, Charles Kern, Seonwook Kim, Shubham Chaskar, lattice, Josef Korbel, Viggo Lekdorf, Thomas Guillem, Niels Hofmans, Josef Korbel (Citadelo), Kun Peeks@@SwayZGl1tZyyy, Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), 杉山 壮太, Dung Do@@_piers2(Calif), Tomi Garcia (archyxsec), OGINOME Tomohito, Mohit Negi, Myungyong Lee, Kwak Kiyong@@Pwnkai23, Song Nuri, Jian Lee@@speedyfriend433, Arash Ale Ebrahim(SCy), Peter Malone(cyberplanet), Nicolas Rabrenovic(cyberplanet), Irvin Wang(cyberplanet), Seonung Park, ALTV!ST (altvi.st/), Xint Code, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Daniel Febrero, Daniel Williams, Arni Hardarson (Neonix Security), Anonymous(TrendAI Zero Day Initiative), Mathis Mansière, James Duffy@@0x4A616D657344, CVE-2026-3784, CVE-2026-3783, Huỳnh Tấn Ngàn, Manuel Fernandez (Stackhopper Security), Stanislav Jelezoglo(Positive Technologies), Redon Gashi, Jonathan Alush-Aben, Arni Hardarson, Jiri Ha, Gandalf4a(PKU), Anton Pakhunov, Richard Zana, hxr1(STAR Labs SG Pte), Hiroki Imai (LAC Co.(STAR Labs SG Pte), Ltd.)(STAR Labs SG Pte), Ashish Kunwar(MurphySec), f0r(MurphySec), Mahmoud Abdelmoniem(ThreatBook), Feng Xue(ThreatBook), XGPT(ThreatBook), Wang Yu, Nicolas Rabrenovic, Lyutoon, Fábio Luís@@scanpt, DARKNAVY@@DarkNavyOrg, Gor Aleksanyan, Michal Kosiorek, Eddy Tsalolikhin, Asjid Kalam@@odinshell, impost0r (ret2plt), Hyunwoo Kim@@v4bel, Hyunwoo Kim@@v4bel(ThreatBook), Lukas Gerlach, Wang Yu(STAR Labs SG Pte), Ernesto Martínez García, Calif Research, Ji'an Zhou, Mingxuan Yang, Ye Zhang, Vladislav Shevchenko (Positive Technologies)(STAR Labs SG Pte), Pasquale Scola(STAR Labs SG Pte), CVE-2026-4424, Robert Mindo, Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), Steven Zhao (zhao.io), Michael DePlante@@izobashi(TrendAI Zero Day Initiative), wh0am1i, Francisco Knabe, Alex Radocea, Do Young Park, Artem Dinaburg(Trail of Bits via Anthropic CVD), Cantina, dr3dd, Gurpreet Shergill(Calif), Gia Bui@@yabeow(Calif), Rhyru9, Kwak Kiyong, Khai Tran, Gurpreet Shergill, Utkarsh Pal, Ignacio Sanmillan@@ulexec, Using GLM(Z), stratan@@5tratan(Almamater Technologies), 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), Brian Carpenter, Milad Nasr, Nicholas Carlini with Claude, Anthropic, Mateusz Krzywicki (iVerify.io), Josef Korbel (Citadelo)(Cisco Talos), Utkarsh Pal(Talence Security), Narendra Singh@@_3P1C(Calif), Josef Korbel (Citadelo)(Calif), Юлия Мерцалова, Luke Francis, Muhamad Syaiful, Behzad Najjarpour Jabbari@@_G4ru_, Vitaly Simonovich, Christian Meurer Xavier, Aaron Grattafiori - NVIDIA AI Red Team, Josef Korbel(Calif), Nan Wang@@eternalsakura13, CVE-2026-28979, Shaheen Fazim, 이재영(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Jorge Welch@@jorgwelch, Talal Haj Bakry(Mysk Inc), Tommy Mysk@@mysk_co(Mysk Inc), Shubham Chaskar(Braze Security Team), Bedran Karakoc(Ruhr University Bochum), Tobias Funke(Ruhr University Bochum), Jacopo Clark(Ruhr University Bochum), Katharina Kohls(Ruhr University Bochum)

Affected Software

12 affected componentsFixes available
Apple iOS<26.6.1
26.6.1
Apple iPadOS<26.6.1
26.6.1
Apple iOS<18.7.10
18.7.10
Apple iPadOS<18.7.10
18.7.10
Apple macOS Tahoe<26.6.2
26.6.2
Apple Safari<26.6.1
26.6.1
Apple visionOS<27
27
Apple iPadOS<18.7.10
Apple iPadOS>=26.0<26.6.1
Apple iPhone OS<18.7.10
Apple iPhone OS>=26.0<26.6.1
Apple macOS>=26.0<26.6.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 27
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 18.7.10
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.6.2
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.6.1
  5. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 26.6.1
  6. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 18.7.10
  7. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 18.7.10
  8. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26.6.1
  9. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26.6.1
  10. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.6.2
  11. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 27

Event History

Aug 17, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·09:29 PM
Data Sourced
via MITRE·09:29 PM
DescriptionWeakness
Data Sourced
via NVD·10:17 PM
DescriptionSeverityWeaknessAffected Software
Aug 18, 2026
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Sep 14, 2026
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which software updates contain the fix?

Devices running iOS or iPadOS 18.7.10, iOS or iPadOS 26.6.1, or macOS Tahoe 26.6.2 contain the fixes referenced in the advisory. The provided data does not identify which earlier versions are affected.

2

What does an attacker need to do to trigger the Safari-related issue?

One described attack path is processing maliciously crafted web content, which may cause Safari to crash unexpectedly. The provided data does not state that code execution, data disclosure, or privilege escalation is possible.

3

Is there a workaround if the update cannot be installed immediately?

The supplied information does not describe any configuration prerequisite, disabled-by-default feature, or temporary mitigation. Applying the relevant operating system update is the only remediation stated.

Company

Resources

Contact

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