CVE-2026-43763: Buffer Overflow

Published Jul 27, 2026
·
Updated

A permissions issue was addressed by removing the vulnerable code. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, macOS Tahoe 26.7. An app may be able to read files outside of its sandbox.

Other sources

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

— Apple

Accessibility. This issue was addressed with improved data protection.

— Apple

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

Credit

Peter Malone, Stuart Wallace(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Jian Lee@@speedyfriend433, Ilya Andr (andrd3v), Gongyu Ma@@Mezone0, David Strnadel, Daniel Febrero, CJ Vana, Asaf Cohen, an anonymous researcher, Cem Onat Karagun, Zhongcheng Li (CK01), Lehan Dilusha Jayasingha (Sri Lanka), Jasminder Pal Singh, Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, tamdao, Franco Belman at Blackwing Intelligence, Richard Zana, Mickey Jin@@patch1t, Pavan Nallamothu, Jared Reyes, D4rthL, Mohamad Dawoud / Abodi Dawoud, Ahmed Alwardani, Zhongcheng Li(IES Red Team), Mr.Gedik@@h4ck2s3c(Turkish Technology), Mr.Gedik@@h4ck2s3c, Sindre Sorhus, Oren Yomtov, Morris Richman@@morrisinlife, Kun Peeks@@SwayZGl1tZyyy, Calif.io in collaboration with Claude, Anthropic Research, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), CVE-2026-65414, Sanny Mitra(Cystack), Sihyun Roh (Compsec(Cystack), SNU)(Cystack), ngockhanh(Cystack), 정우 하@@0xfa11babe, Suresh Sundaram, Surej Sekhar, Hari Shanmugam (The Hxr1), Ataberk Yavuzer, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Dawuge(Shuffle Team), Nathaniel Oh@@calysteon, 이재영, Siyeong kim, Chris Bailey - Short Circuit, AL Najafi, Stuart Wallace, Kraken Cryptocurrency Exchange(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Ryan Hughes, Kujtim Kryeziu (Sentry), Mustafa Calap@@ordinal0, dbg.re), stratan@@5tratan, Rahul Raj, Yongyue WANG AKA Brian.W(OKX security), Omar Cerrito, Aaron Grattafiori - NVIDIA AI Red Team, Meshaal @ Darkcov, Joseph Shamoon, 章鱼哥 （aipyaipy.com）@@aipy, instantraaamen (github.com/instantraaamen) Contact: masa.shiramizu.com@@gmail, 章鱼哥 (aipyaipy.com）@@aipy, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Tommy DeVoss@@thedawgyg(Braze Security Team), PETOWORKS의 Bugeun Choi@@Bugeun, Hyunwoo Kim@@v4bel, flower xu, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Adriatik Raci, Manish Bhatt(Nosebeard Labs), Amazon Leo Security(Nosebeard Labs), Nathaniel Oh@@calysteon(Nosebeard Labs), Meta Red Team X - Nik Tsytsarkin, Junyeong Lee (jylab.github.io), Merrick Hare, Narendra Singh@@_3P1C, John Nzyuko Uvyu, Aditya Kumar, Geoffrey Lovelace, Bruce Dang(Calif), Luke Symons, Jiyong Yang, Roman Zabicki, Arni Hardarson (Neonix Security)(Talence Security), Tristan Madani@@TristanInSec(Talence Security), 정우 하, Aswin Kumar Gokulakannan, Dun, Jonathan Bar Or@@yo_yo_yo_jbo(ThreatBook), Feng Xue(ThreatBook), XGPT(ThreatBook), Alfredo Pesoli@@__rev(Bynar), Justin O'Leary, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, Lyutoon, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, Bernhard Jackiewicz, Svetoslav Stolarov & Aisa Fox(Calif), Josh Maine(Calif), genter0, Surya Narayan Kushwaha, James Duffy@@0x4A616D657344, Eddy Tsalolikhin, Hiroki Imai (LAC Co., Ltd.), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Abhijeet Singh (www.linkedin.com/in/abhiunix/), R4mbb(KRsecurity), Stuart Thomas, Vladislav Shevchenko (Positive Technologies), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Bhaswanth Chigurupati, Mohamed Wedatalla, Arjanit Isufi, HvxyZLF, Adrián Díaz Aguilar, Dave G.(supernetworks), Alex Radocea(supernetworks), Armend Gashi, Matthew Zamat, Yiğit Can YILMAZ@@yilmazcanyigit, Sindre Sorhus(IES Red Team), Hoffcona(IES Red Team), Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, Hongsik Kim (mnur), Dhiyanesh Selvaraj@@redroot97, wdszzml, Atuin Automated Vulnerability Discovery Engine, Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, Jaeho Nam(SNU CSE MMLAB), Jungbum Lee(SNU CSE MMLAB), Sangwi Kang(SNU CSE MMLAB), Hyeonguk Ko(SNU CSE MMLAB), Taekyoung Kwon(SNU CSE MMLAB), John Lussier, Filip Olszak, Jakob Pammer(Calif), 재영 정(Calif), 재영 정(ThreatBook), Peter Malone(ThreatBook), Jay Patel, 재영 정, Dave G., YingMuo@@YingMuo(DEVCORE Research Team), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Abodi Dawoud, 糖豆爸爸(@晴天组织), Robert Mindo, Niels Hofmans, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, 이재영(Positive Technologies), Seung Je Seong(Positive Technologies), Jakob Pammer(Positive Technologies), Ilya Andr (andrd3v)(Positive Technologies), Jérôme Djouder, Amy (amys.website), Meridian Miftari, Zeyang Li&Yuxiang Wang(Chongqing Telecom), Tomi (tk0) Koski@@tomikoski, bubu(Calif), Surya Narayan Kushwaha(Calif), Roman Zabicki(Calif), Richard Zana(Calif), Omar Cerrito(Calif), HE WEI（ギカク）(Calif), Chris Bailey - Short Circuit(Calif), He Wei（ギカク)(Calif), Manish Bhatt, Amazon Leo Security, 진규정 (Gyujeong Jin, @@G1uN4sh, hxr1, Ashish Kunwar(Positive Technologies), Mikhail Lozhnikov(Positive Technologies), Liu Xue & 九宫格(Chongqing Telecom), Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), Adam Franke(CyStack), Ashish Kunwar(CyStack), Trung Nguyen@@everping(CyStack), Bartlomiej Dmitruk(striga), Stanislaw Strzalkowski(isec), Pinak Oza, 章鱼哥.com@@aipyaipy, 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, Seonung Park, ALTV!ST (altvi.st/), YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Anton Pakhunov, 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, Matthew Schneider, Dallas Dubs(Nosebeard Labs), Aaron Grattafiori - NVIDIA AI Red Team(Nosebeard Labs), XBreach.ai(Nosebeard Labs), Roman Zabicki(Nosebeard Labs), Katika Mohaseen(Nosebeard Labs), an anonymous researcher(Nosebeard Labs), CVE-2026-3784, CVE-2026-3783, Lance Cain - Offensive Security Engineer, SpecterOps Inc., Mahmoud Abdelmoniem(DBAppSecurity's WeBin lab), Kujtim Kryeziu(DBAppSecurity's WeBin lab), 이재영(Nosebeard Labs), Ilya Andr (andrd3v)(Nosebeard Labs), beist, Gil Portnoy & Henry, Anthony Laou Hine Tsuei@@anarcheuz, Ayaan Ahmad, erdene-och Byambabayar, Manuel Fernandez (Stackhopper Security), Stanislav Jelezoglo, Somair Ansar(Calif), Johnny Franks@@0xjohnny, Alexandre Soleiman, Alexander Tarasikov, Redon Gashi, Atul R V & Ashmit Sharma, Hcamael, Surya Kushwaha, Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Arni Hardarson, Jonathan Alush-Aben, Geonha Lee@@leegn4a, Igor Ushakov, Ryan Hileman via Xint Code (xint.io), Ashish Kunwar(MurphySec), f0r(MurphySec), Mahmoud Abdelmoniem, Wang Yu, 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), 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), 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, Lukas Gerlach, Tristan Rousseau, Dun(DARKNAVY), deepsec@@DarkNavyOrg(DARKNAVY), CVE-2026-4424, He Wei (ギカク)(aipyaipy), 章鱼哥@@aipy(aipyaipy), Jex Amro, Daisuke Hatakeyama Research)@@SYZD, Richard Zana(Nosebeard Labs), yk lin@@pixiepointsec, wh0am1i, Robert Tran, 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, Francisco Knabe, Zachary Neal(Stripe), Hcamael(Stripe), 章鱼哥 (aipyaipy.com)@@aipy(Stripe), JC Alvarado(Stripe), Jacob Hazak, @@pixiepointsec, Nik Tsytsarkin, Junming C.(Chapoly1305), 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), Kitten Food, Tien-Chih Lin(CyCraft Technology), Tien-Chih Lin, 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, 이재영(Appknox), Peter Malone(cyberplanet), Nicolas Rabrenovic(cyberplanet), Irvin Wang(cyberplanet), CVE-2025-14017, CVE-2025-14819, Jonathan Bar Or@@yo_yo_yo_jbo, Stanislav Jelezoglo(Positive Technologies), Gandalf4a(PKU), 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@@attahasa, Atul R V, Dan Raviv, Chanwit Muenprakoddee (ChemIndy), Aethel-Systems, Pyrophoria, Estifanos Megersa, Ahmed Uddin, silo, wdszzml(Bynar), Atuin Automated Vulnerability Discovery Engine(Bynar)

Affected Software

7 affected componentsFixes available
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
Apple macOS Tahoe<26.6
26.6
Apple macOS Sequoia<15.8
15.8

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 15.7.8
  2. Upgrade

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

    Fixed in 14.8.8
  3. Upgrade

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

    Fixed in 26.6
  4. Upgrade

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

    Fixed in 26.7
  5. Upgrade

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

    Fixed in 15.8
  6. Upgrade

    Upgrade macOS Sequoia to a version that resolves this vulnerability.

    Fixed in 15.7.8
  7. Upgrade

    Upgrade macOS Sequoia to a version that resolves this vulnerability.

    Fixed in 15.8
  8. Upgrade

    Upgrade macOS Sonoma to a version that resolves this vulnerability.

    Fixed in 14.8.8
  9. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.6
  10. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.7

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
Affected Software
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·08:12 PM
Data Sourced
via MITRE·08:12 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Sep 14, 2026
Updated
via Apple·12:00 AM
DescriptionWeakness
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

What is the severity of CVE-2026-43763?

The severity of CVE-2026-43763 is medium, with a CVSS score of 5.5.

2

How do I fix CVE-2026-43763?

To fix CVE-2026-43763, update to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6.

3

What impact does CVE-2026-43763 have on my system?

CVE-2026-43763 may allow an app to read files outside of its sandbox, potentially compromising data privacy.

4

Which systems are affected by CVE-2026-43763?

CVE-2026-43763 affects Apple macOS, including macOS Sequoia, macOS Sonoma, and macOS Tahoe.

5

How was CVE-2026-43763 addressed?

CVE-2026-43763 was addressed by removing the vulnerable code and improving data protection within the Accounts Framework.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203