CVE-2026-28991: High severity Apple visionOS vulnerability
Published May 11, 2026
·Updated
Accelerate. An out-of-bounds read was addressed with improved bounds checking.
Other sources
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An app may be able to cause a denial-of-service.
— NVD
Credit
Seiji Sakurai@@HeapSmasher, Asaf Cohen, Dave G., Vamshi Paili, Tony Gorez for Reverse Society@@tonygo_, CVE-2026-1837, impost0r (ret2plt), David Ige(Beryllium Security), Alan Wang, 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, Suresh Sundaram, Jiri Ha, Arni Hardarson, Johnny Franks@@zeroxjf, Mihalis Haatainen, Ari Hawking, Ashish Kunwar, 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, Ryan Hileman via Xint Code (xint.io), Ruslan Dautov, Anton Pakhunov, Ricardo Prado, Ian van der Wurff (ian.nl), Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Ilya Sc. Jowell A., Peter Malone, Doron Assness, Andy Koo@@andykoo(Hexens), Adriatik Raci, Cantina, Luke Francis, kwak kiyong / kakaogames, Vitaly Simonovich, Adel Bouachraoui, greenbynox, Do Young Park, Yuhao Hu, Yuanming Lai, Chenggang Wu, Zhe Wang, 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, Tristan Madani@@TristanInSec(Talence Security), Aisle offensive security research team (Joshua Rogers(Calif), Luigino Camastra(Calif), Igor Morgenstern(Calif), (Calif), Guido Vranken)(Calif), Maher Azzouzi(Calif), Ngan Nguyen(Calif), Khiem Tran, Milad Nasr, Nicholas Carlini with Claude, Anthropic, dr3dd, Kenneth Hsu(Palo Alto Networks), Jérôme DJOUDER, Brendon Tiszka(Google Project Zero), an anonymous researcher, Google Threat Analysis Group, Somair Ansar, Csaba Fitzl@@theevilbit(Iru), Chris Betz(Talence Security), Dhiyanesh Selvaraj@@redroot97, Atul R V, Omar Cerrito, Jorge Welch, Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Kun Peeks@@SwayZGl1tZyyy, Aswin Kumar Gokula Kannan, wdszzml, Atuin Automated Vulnerability Discovery Engine, beist, Yiğit Can YILMAZ@@yilmazcanyigit, Calif.io in collaboration with Claude, Anthropic Research, Dan Raviv, Peter Malone(Supernetworks), Dave G.(Supernetworks), Alex Radocea(Supernetworks), Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), Amy (amys.website), YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), David Ige - Beryllium Security, Gia Bui@@yabeow(Calif), w0wbox, Wang Yu
Affected Software
12 affected componentsFixes available
Apple visionOS<26.5
26.5
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>=26.0<26.5
Apple tvOS<26.5
Apple visionOS<26.5
Apple WatchOS<26.5
Event History
May 11, 2026
Data Sourced
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.
- CVE-2026-28991
- CVE-2026-28988
- CVE-2026-28959
- CVE-2026-28995
- CVE-2026-1837
- CVE-2026-28956
- CVE-2026-39869
- CVE-2026-28964
- CVE-2026-28936
- CVE-2026-28918
- CVE-2026-43659
- CVE-2026-28977
- CVE-2026-28990
- CVE-2026-28992
- CVE-2026-28969
- CVE-2026-43654
- CVE-2026-28897
- CVE-2026-28972
- CVE-2026-28983
- CVE-2026-43668
- CVE-2026-43666
- CVE-2026-28940
- CVE-2026-28906
- CVE-2026-28846
- CVE-2026-28993
- CVE-2026-28974
- CVE-2026-28957
- CVE-2026-28996
- CVE-2026-43660
- CVE-2026-28907
- CVE-2026-28962
- CVE-2026-43658
- CVE-2026-28905
- CVE-2026-28847
- CVE-2026-28904
- CVE-2026-28955
- CVE-2026-28903
- CVE-2026-28953
- CVE-2026-28902
- CVE-2026-28901
- CVE-2026-28883
- CVE-2026-28958
- CVE-2026-28971
- CVE-2026-28942
- CVE-2026-28947
- CVE-2026-28917
- CVE-2026-28944
- CVE-2026-28920
- CVE-2026-43661
- CVE-2026-28943
- CVE-2026-43655
- CVE-2026-28951
- CVE-2026-28986
- CVE-2026-28987
- CVE-2026-43653
- CVE-2026-28985
- CVE-2026-43656
- CVE-2026-28963
- CVE-2026-28913
- CVE-2026-28994
- CVE-2026-28965
- CVE-2026-28922
- CVE-2026-28915
- CVE-2026-28923
- CVE-2026-28925
- CVE-2026-28978
- CVE-2026-28908
- CVE-2026-28954
- CVE-2026-28952
- CVE-2026-28929
- CVE-2026-28941
- CVE-2026-28961
- CVE-2026-43652
- CVE-2026-39870
- CVE-2026-28848
- CVE-2026-28930
- CVE-2026-28919
- CVE-2026-28924
- CVE-2026-39871
- CVE-2026-28976
- CVE-2026-28946
- CVE-2026-28819
- CVE-2026-28914
Frequently Asked Questions
1
What is the severity of CVE-2026-28991?
CVE-2026-28991 is classified as a moderate severity vulnerability.
2
How do I fix CVE-2026-28991?
To fix CVE-2026-28991, update your device to iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, or watchOS 26.5.
3
What type of vulnerability is CVE-2026-28991?
CVE-2026-28991 is an out-of-bounds read vulnerability that can result in data exposure.
4
Which Apple products are affected by CVE-2026-28991?
CVE-2026-28991 affects various Apple products including iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS versions prior to 26.5.
5
What can happen if I do not address CVE-2026-28991?
If CVE-2026-28991 is not addressed, it may lead to potential denial-of-service conditions on the affected devices.