CVE-2026-28856: Input Validation

Q: What is the severity of CVE-2026-28856?

The severity of CVE-2026-28856 is considered high due to the authentication and authorization issues it addresses.

Q: How do I fix CVE-2026-28856?

You can fix CVE-2026-28856 by updating your affected Apple device to version 26.4 or later.

Q: Which Apple products are affected by CVE-2026-28856?

CVE-2026-28856 affects Apple iOS, iPadOS, watchOS, and visionOS versions up to 26.4.

Q: What problems does CVE-2026-28856 address?

CVE-2026-28856 addresses issues related to authentication, authorization, state management, and memory handling.

Q: Can CVE-2026-28856 impact my device's security?

Yes, CVE-2026-28856 can significantly impact your device's security if not patched.

Published Mar 24, 2026

Updated

802.1X. An authentication issue was addressed with improved state management.

Other sources

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

— Apple

App Protection. The issue was addressed with improved checks.

— Apple

Audio. A type confusion issue was addressed with improved memory handling.

— Apple

Audio. A use-after-free issue was addressed with improved memory management.

— Apple

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

— Apple

Credit

Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Alvin Aries Tapia, an anonymous researcher, Cristian Dinca (icmd.tech), Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), Etienne Charron (Renault), Victoria Martini (Renault), Zhongcheng Li(IES Red Team), CVE-2025-14524, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), XiguaSec, CVE-2025-64505, Gor Aleksanyan(BoB 0xB6), Dhiyanesh Selvaraj@@redroot97(BoB 0xB6), 이동하 (Lee Dong Ha(BoB 0xB6), Jian Lee@@speedyfriend433, DARKNAVY@@DarkNavyOrg, Johnny Franks@@zeroxjf, Ilya Andr (andrd3v)(Voynich Group), Ilias Morad (A2nkF)(Voynich Group), Duy Trần@@khanhduytran0, @@hugeBlack, Himanshu Bharti@@Xpl0itme(Khatima), wdszzml, Atuin Automated Vulnerability Discovery Engine, Guy Dor, Gongyu Ma@@Mezone0, Alex Radocea, Yongdae Kim @ SysSec, KAIST, Caspian Tarafdar, Andrew Becker, webb, Thomas Espach, @@hamayanhamayan, Yeonghyeon Choi, Daniel Rhea, Söhnke Benedikt Fischedick (Tripton), Emrovsky & Switch3301, Yevhen Pervushyn, Minse Kim, Narcis Oliveras Fontàs, Nathaniel Oh@@calysteon, Hongze Wu(Ant Group Infrastructure Security Team), Shuaike Dong(Ant Group Infrastructure Security Team), greenbynox, Arni Hardarson, Héloïse Gollier, Mathy Vanhoef (KU Leuven), Rosyna Keller(Totally Not Malicious Software), Adrián Pérez Martínez, Uluk Abylbekov, Zack Tickman, Justin Cohen(Google), Jex Amro

Affected Software

8 affected componentsFixes available

Apple iOS<26.4

26.4

Apple iPadOS<26.4

26.4

Apple WatchOS<26.4

26.4

Apple visionOS<26.4

26.4

Apple iPadOS<26.4

Apple iPhone OS<26.4

Apple visionOS<26.4

Apple WatchOS<26.4

Event History

Mar 24, 2026

Data Sourced

via Apple·12:00 AM

DescriptionWeaknessAffected Software

Updated

via Apple·12:00 AM

DescriptionWeakness

Updated

via Apple·12:00 AM

Description

Updated

via Apple·12:00 AM

DescriptionWeaknessAffected Software

Mar 25, 2026

CVE Published

via MITRE·12:32 AM

Data Sourced

via MITRE·12:32 AM

DescriptionWeakness

Data Sourced

via NVD·01:17 AM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

What is the severity of CVE-2026-28856?

The severity of CVE-2026-28856 is considered high due to the authentication and authorization issues it addresses.

How do I fix CVE-2026-28856?

You can fix CVE-2026-28856 by updating your affected Apple device to version 26.4 or later.

Which Apple products are affected by CVE-2026-28856?

CVE-2026-28856 affects Apple iOS, iPadOS, watchOS, and visionOS versions up to 26.4.

What problems does CVE-2026-28856 address?

CVE-2026-28856 addresses issues related to authentication, authorization, state management, and memory handling.

Can CVE-2026-28856 impact my device's security?

Yes, CVE-2026-28856 can significantly impact your device's security if not patched.

CVE-2026-28856: Input Validation

Other sources

Credit

Affected Software

Event History

Parent advisories

Peer vulnerabilities

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Frequently Asked Questions

What is the severity of CVE-2026-28856?

How do I fix CVE-2026-28856?

Which Apple products are affected by CVE-2026-28856?

What problems does CVE-2026-28856 address?

Can CVE-2026-28856 impact my device's security?

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