CVE-2026-28956: Buffer Overflow

Published May 11, 2026
·
Updated

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory.

Other sources

Accelerate. An out-of-bounds read was addressed with improved bounds checking.

— Apple

Accessibility. This issue was addressed through improved state management.

— Apple

Accounts. A permissions issue was addressed with additional restrictions.

— Apple

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

— Apple

APFS. A buffer overflow was addressed with improved bounds checking.

— Apple

Credit

Arash Ale Ebrahim(SCy), Dave G., Vamshi Paili, Tony Gorez for Reverse Society@@tonygo_, CVE-2026-1837, impost0r (ret2plt), Nicholas Soh, David Ige(Beryllium Security), Alan Wang, Ailsa Sun, Christopher W. Fletcher, Hovav Shacham, David Kohlbrenner, Riccardo Paccagnella, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Niels Hofmans(TrendAI Zero Day Initiative), Anonymous(TrendAI Zero Day Initiative), Alex Radocea, Gandalf4a(PKU), Anton Pakhunov, an anonymous researcher, Suresh Sundaram, Jiri Ha, Arni Hardarson, Johnny Franks@@0xjohnny, Google Threat Analysis Group, Mihalis Haatainen, Ari Hawking, Ashish Kunwar, Richard Zana, Dhiyanesh Selvaraj@@redroot97, Somair Ansar, Vaagn Vardanian, Nathaniel Oh@@calysteon, popku1337(STAR Labs SG Pte), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Robert Tran, Aswin kumar Gokulakannan, Csaba Fitzl@@theevilbit(Iru), Ryan Hileman via Xint Code (xint.io), Chris Betz(Talence Security), Tristan Madani@@TristanInSec(Talence Security), Ruslan Dautov, Zhongcheng Li (CK01), Atul R V, Omar Cerrito, Ricardo Prado, Ian van der Wurff (ian.nl), Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Asaf Cohen, Ilya Sc. Jowell A., Peter Malone, Jorge Welch, Doron Assness, Andy Koo@@andykoo(Hexens), Adriatik Raci, Cantina, Luke Francis, kwak kiyong / kakaogames, Vitaly Simonovich, Adel Bouachraoui, greenbynox, Do Young Park, Artem Dinaburg(Trail of Bits via Anthropic CVD), Yuhao Hu, Yuanming Lai, Chenggang Wu, Zhe Wang, Idan Masas(TrendAI Zero Day Initiative), DARKNAVY@@DarkNavyOrg(TrendAI Zero Day Initiative), Daniel Rhea, Luka Rački, wac(TrendAI Zero Day Initiative), Kookhwan Lee(TrendAI Zero Day Initiative), Mateusz Krzywicki (iVerify.io), Maher Azzouzi, Aisle offensive security research team (Joshua Rogers(Calif), Luigino Camastra(Calif), Igor Morgenstern(Calif), (Calif), Guido Vranken)(Calif), Maher Azzouzi(Calif), Ngan Nguyen(Calif), dr3dd, Milad Nasr, Nicholas Carlini with Claude, Anthropic, Khiem Tran, lebr0nli(National Yang Ming Chiao Tung University), Security, Systems Lab, Kenneth Hsu(Palo Alto Networks), Jérôme DJOUDER, Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Brendon Tiszka(Google Project Zero), Seiji Sakurai@@HeapSmasher, Kun Peeks@@SwayZGl1tZyyy, Surya Kushwaha, Aswin Kumar Gokula Kannan, wdszzml, Atuin Automated Vulnerability Discovery Engine, Yiğit Can YILMAZ@@yilmazcanyigit, Robert Tran(STAR Labs SG Pte), Calif.io in collaboration with Claude, Anthropic Research, beist, Chris Betz, Morris Richman@@morrisinlife, Andrei Dodu, Matej Moravec@@MacejkoMoravec, Amy (amys.website), YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Wang Yu, CVE-2025-14017, CVE-2025-14819, Prathamesh Walunj@@attahasa, Dan Raviv, Surya Kushwaha(Supernetworks), Robert Tran(Supernetworks), Peter Malone(Supernetworks), Dave G.(Supernetworks), Alex Radocea(Supernetworks), Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), David Ige - Beryllium Security, Gia Bui@@yabeow(Calif), w0wbox, Jorge Welch@@jorgwelch, Zhongcheng Li(IES Red Team)

Affected Software

16 affected componentsFixes available
Apple macOS Sonoma<14.8.7
14.8.7
Apple visionOS<26.5
26.5
Apple macOS Sequoia<15.7.7
15.7.7
Apple iOS<26.5
26.5
Apple iPadOS<26.5
26.5
Apple macOS Tahoe<26.5
26.5
Apple tvOS<26.5
26.5
Apple WatchOS<26.5
26.5
Apple iPadOS<26.5
Apple iPhone OS<26.5
Apple macOS>=14.0<14.8.7
Apple macOS>=15.0<15.7.7
Apple macOS>=26.0<26.5
Apple tvOS<26.5
Apple visionOS<26.5
Apple WatchOS<26.5

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 26.5
  2. Upgrade

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

    Fixed in 14.8.7
  3. Upgrade

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

    Fixed in 15.7.7
  4. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26.5
  5. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26.5
  6. Upgrade

    Upgrade macOS Sequoia to a version that resolves this vulnerability.

    Fixed in 15.7.7
  7. Upgrade

    Upgrade macOS Sonoma to a version that resolves this vulnerability.

    Fixed in 14.8.7
  8. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.5
  9. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 26.5
  10. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 26.5
  11. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 26.5

Event History

May 11, 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
Updated
via Apple·12:00 AM
Affected Software
CVE Published
via MITRE·08:08 PM
Data Sourced
via MITRE·08:08 PM
DescriptionWeakness
Data Sourced
via NVD·09:18 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-2026-28956?

CVE-2026-28956 has a high severity level due to potential remote code execution from malicious media files.

2

How do I fix CVE-2026-28956?

To fix CVE-2026-28956, update your affected Apple device to one of the patched versions: iOS 26.5, iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, or watchOS 26.5.

3

What types of devices are affected by CVE-2026-28956?

CVE-2026-28956 affects various Apple devices, including iPhones, iPads, Macs, Apple TVs, and Apple Watches.

4

What happens if I do not update for CVE-2026-28956?

If you do not update for CVE-2026-28956, your device may be vulnerable to crashes and potential exploitation through malicious media files.

5

Is CVE-2026-28956 specific to a certain version of the software?

Yes, CVE-2026-28956 is specifically a concern for versions prior to the respective patches provided in the latest updates.

Company

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