CVE-2025-43539: Buffer Overflow

Published Dec 12, 2025
·
Updated

App Store. A permissions issue was addressed with additional restrictions.

Other sources

AppleJPEG. The issue was addressed with improved bounds checks.

— Apple

The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Sequoia 15.7.3, macOS Sonoma 14.8.3, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing a file may lead to memory corruption.

— MITRE

Credit

Michael Reeves@@IntegralPilot, an anonymous researcher, Jex Amro, Wojciech Regula(SecuRing), Riley Walz, CVE-2024-7264, CVE-2025-9086, Noah Gregory (wts.dev), Andrew Calvano(Meta Product Security), Lucas Pinheiro(Meta Product Security), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Kaitao Xie(Alibaba Group), Xiaolong Bai(Alibaba Group), CVE-2025-5918, Rosyna Keller(Totally Not Malicious Software), Haoling Zhou(SecLab of The Ohio State University), Shixuan Zhao@@NSKernel(SecLab of The Ohio State University), Chao Wang@@evi0s(SecLab of The Ohio State University), Zhiqiang Lin(SecLab of The Ohio State University), Iván Savransky, Mickey Jin@@patch1t, Amy@@asentientbot, Gergely Kalman@@gergely_kalman, Kay Belardinelli (Harvard University), Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Yiğit Ocak, Duy Trần@@khanhduytran0, Google Threat Analysis Group, Phil Pizlo(Epic Games), Apple, Google Big Sleep, Hossein Lotfi@@hosselot(Trend Micro Zero Day Initiative), Nan Wang@@eternalsakura13, floeki(IES Red Team of ByteDance), Zhongcheng Li(IES Red Team of ByteDance), an anonymous researcher(Technische Hochschule Ingolstadt), Michael Schmutzer(Technische Hochschule Ingolstadt), Bing Shi(Alibaba Group), Wenchao Li(Alibaba Group), (Indiana University Bloomington), Luyi Xing(Indiana University Bloomington), 이동하 (Lee Dong Ha(BoB 14th), Kirin@@Pwnrin, Sumanth Rao(UC San Diego), Ye Shu(UC San Diego), Stefan Savage(UC San Diego), Aaron Schulman(UC San Diego), Geoffrey M. Voelker(UC San Diego), Enze Liu (Carnegie Mellon University), Andrei Simion, piffz, Daniel Nurkin, Al Sadman Awal, Mohamed Hamdadou & Mahran Alhazmi, Hichem Maloufi, Christian Mina, Gerson Aldaz, qwerty j0y & Ricardo Garcia, Dorian Del Valle, iG0x72(XiguaSec), JJ(XiguaSec), Lehan Dilusha Jayasinghe, Ron Elemans, Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Csaba Fitzl@@theevilbit(Iru), Kenneth Chew, Atul R V, @@retsew0x01, Morris Richman@@morrisinlife

Affected Software

12 affected componentsFixes available
Apple tvOS<26.2
26.2
Apple iOS<18.7.3
18.7.3
Apple iPadOS<18.7.3
18.7.3
Apple macOS Tahoe<26.2
26.2
Apple macOS Sonoma<14.8.3
14.8.3
Apple iOS<26.2
26.2
Apple iPadOS<26.2
26.2
Apple WatchOS<26.2
26.2
Apple visionOS<26.2
26.2
Apple macOS Sequoia<15.7.3
15.7.3
Apple macOS<14.8.3
Apple macOS>=15.0<15.7.3

Event History

Dec 12, 2025
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·08:56 PM
Data Sourced
via MITRE·08:56 PM
DescriptionWeakness
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2025-43539?

CVE-2025-43539 is considered a critical vulnerability that could lead to memory corruption when processing a file.

2

How do I fix CVE-2025-43539?

To fix CVE-2025-43539, update your affected Apple devices to the latest versions of macOS Sonoma 14.8.3, macOS Sequoia 15.7.3, iOS 18.7.3, iPadOS 18.7.3, tvOS 26.2, watchOS 26.2, or visionOS 26.2.

3

Which versions of Apple OS are affected by CVE-2025-43539?

CVE-2025-43539 affects versions prior to macOS Sonoma 14.8.3, macOS Sequoia 15.7.3, and several versions of iOS, iPadOS, tvOS, watchOS, and visionOS.

4

What types of devices are impacted by CVE-2025-43539?

CVE-2025-43539 impacts Apple devices running macOS, iOS, iPadOS, tvOS, watchOS, and visionOS that are prior to the specified update versions.

5

What should I do if I cannot update my device to fix CVE-2025-43539?

If you cannot update your device to fix CVE-2025-43539, consider limiting the use of the affected device until an update can be applied.

Company

Resources

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