CVE-2026-43665: Buffer Overflow

Published Jul 27, 2026
·
Updated

Accounts. A parsing issue in the handling of directory paths was addressed with improved path validation.

Other sources

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

— 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

APFS. The issue was addressed with improved memory handling.

— Apple

App Store. This issue was addressed with improved checks.

— Apple

Credit

Richard Zana(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Tristan Madani@@TristanInSec(Talence Security), Michael DePlante@@izobashi(TrendAI Zero Day Initiative), wh0am1i, stratan@@5tratan, Robert Tran, Mickey Jin@@patch1t, Dan Raviv, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), Matej Moravec@@MacejkoMoravec, Dave G., 九宫格(Chongqing Telecom), Chanwit Muenprakoddee (ChemIndy), Aethel-Systems, Narcis Oliveras Fontàs, Sindre Sorhus, Richard Zana, Francisco Knabe, Zachary Neal(Stripe), Hcamael(Stripe), 章鱼哥 (aipyaipy.com)@@aipy(Stripe), JC Alvarado(Stripe), Jacob Hazak, @@pixiepointsec, Nik Tsytsarkin, Asaf Cohen, Junming C.(Chapoly1305), Ayaan Ahmad, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, Feng Xue(ThreatBook), XGPT(ThreatBook), Peter Malone, He Wei (ギカク)(Cisco Talos), Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Aswin Kumar Gokulakannan, Kitten Food, Calif.io in collaboration with Claude, Anthropic Research, Csaba Fitzl@@theevilbit(Iru), Tien-Chih Lin(CyCraft Technology), Hyunwoo Kim@@v4bel, Bruce Dang(Calif), an anonymous researcher, Mathis Mansière, yk lin@@pixiepointsec, silo, wdszzml(Bynar), Atuin Automated Vulnerability Discovery Engine(Bynar), Alfredo Pesoli@@__rev(Bynar), Adam Franke(CyStack), Trung Nguyen@@everping(CyStack), Ashish Kunwar, 이재영(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Stuart Wallace, Arni Hardarson (Neonix Security), Bartlomiej Dmitruk(striga), Stanislaw Strzalkowski(isec), Narendra Singh@@_3P1C, Rahul Raj, Pinak Oza, Robert Mindo, Vladislav Shevchenko (Positive Technologies), tamdao, Franco Belman at Blackwing Intelligence, Peter Malone(cyberplanet), Nicolas Rabrenovic(cyberplanet), Irvin Wang(cyberplanet), Rishabh Jain (rjcyber)(cyberplanet), impost0r (ret2plt), David Ige - Beryllium Security, lokerxx(Economics), Narendra Singh@@_3P1C(Economics), Lyutoon(Economics), Jordy Zomer@@pwningsystems(Economics), Richard Zana(Economics), George Stergiopoulos(Economics), InfoSec lab(Economics), Athens University(Economics), Business, Greece, 이재영, Pavan Nallamothu, Jared Reyes, John Lussier, Seonung Park, ALTV!ST (altvi.st/), Dun, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Nathaniel Oh@@calysteon, Daniel Williams, Gergely Kalman@@gergely_kalman, Anonymous(TrendAI Zero Day Initiative), ret2happy, James Duffy@@0x4A616D657344, Matthew Schneider, Dallas Dubs(Nosebeard Labs), Aaron Grattafiori - NVIDIA AI Red Team(Nosebeard Labs), XBreach.ai(Nosebeard Labs), Yongyue WANG AKA Brian.W(OKX security), Roman Zabicki(Nosebeard Labs), Katika Mohaseen(Nosebeard Labs), an anonymous researcher(Nosebeard Labs), CVE-2026-3784, CVE-2026-3783, CVE-2025-14017, CVE-2025-14819, HvxyZLF, Lance Cain - Offensive Security Engineer, SpecterOps Inc., Jonathan Bar Or@@yo_yo_yo_jbo, Anthony Laou Hine Tsuei@@anarcheuz, Gil Portnoy & Henry, erdene-och Byambabayar, Niels Hofmans, Manuel Fernandez (Stackhopper Security), Stanislav Jelezoglo(Positive Technologies), Ilya Andr (andrd3v)(Positive Technologies), Redon Gashi, Nicolas Rabrenovic, Atul R V & Ashmit Sharma, Hcamael, 章鱼哥 （aipyaipy.com）@@aipy, Surya Narayan Kushwaha, Cem Onat Karagun, Jonathan Alush-Aben, Arni Hardarson, Gandalf4a(PKU), Anton Pakhunov, PETOWORKS의 Bugeun Choi@@Bugeun, Geonha Lee@@leegn4a, Dhiyanesh Selvaraj@@redroot97, hxr1(STAR Labs SG Pte), Hiroki Imai (LAC Co.(STAR Labs SG Pte), Ltd.)(STAR Labs SG Pte), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Igor Ushakov, Ryan Hileman via Xint Code (xint.io), Adam Doupé(ASU SEFCOM), Ashish Kunwar(MurphySec), f0r(MurphySec), Mahmoud Abdelmoniem(ThreatBook), Wang Yu, Lyutoon, Hiroki Imai (LAC Co., Ltd.), Fábio Luís@@scanpt, DARKNAVY@@DarkNavyOrg, Gor Aleksanyan, Michal Kosiorek, Eddy Tsalolikhin, Asjid Kalam@@odinshell, Hyunwoo Kim@@v4bel(ThreatBook), Wang Yu(STAR Labs SG Pte), Ernesto Martínez García, Calif Research, Ji'an Zhou, Mingxuan Yang, Ye Zhang, Ye Zhang@@VAR10CK(Baidu Security), Vladislav Shevchenko (Positive Technologies)(STAR Labs SG Pte), Pasquale Scola(STAR Labs SG Pte), Lukas Gerlach, Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Ruslan Dautov, CVE-2026-4424, Prathamesh Walunj@@attahasa, Amy (amys.website), Atul R V, Daisuke Hatakeyama Research)@@SYZD, Aaron Grattafiori - NVIDIA AI Red Team, Pyrophoria, Estifanos Megersa, Ahmed Uddin

Affected Software

4 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

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 macOS Sequoia to a version that resolves this vulnerability.

    Fixed in 15.7.8
  4. Upgrade

    Upgrade macOS Sonoma 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
CVE Published
via MITRE·08:14 PM
Data Sourced
via MITRE·08:14 PM
DescriptionWeakness
Data Sourced
via NVD·09:16 PM
DescriptionSeverityWeaknessAffected 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-2026-43665?

The severity of CVE-2026-43665 is classified as medium with a CVSS score of 5.5.

2

How do I fix CVE-2026-43665?

To fix CVE-2026-43665, ensure that your Apple macOS Sequoia or macOS Sonoma systems are updated to the latest security patches provided by Apple.

3

What kind of vulnerabilities does CVE-2026-43665 involve?

CVE-2026-43665 involves a buffer overflow and input validation issues related to directory path handling.

4

Which software is affected by CVE-2026-43665?

CVE-2026-43665 affects Apple macOS Sequoia and Apple macOS Sonoma.

5

What are the potential impacts of exploiting CVE-2026-43665?

Exploiting CVE-2026-43665 could lead to unauthorized access or manipulation of system resources due to its buffer overflow nature.

Company

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