CVE-2026-28856: Input Validation

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

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@@0xjohnny, Ilya Andr (andrd3v)(RTU MIREA), Ilias Morad (A2nkF)(Voynich Group), Duy Trần@@khanhduytran0, @@hugeBlack, Himanshu Bharti@@Xpl0itme(Khatima), Dave G., wdszzml, Atuin Automated Vulnerability Discovery Engine, Guy Dor, Gongyu Ma@@Mezone0, Alex Radocea, an anonymous researcher, Hazem Issa, 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, Justin Cohen(Google), Jex Amro, Tuan D. Hoang, Yongdae Kim @ KAIST SysSec Lab, Alvin Aries Tapia, Cristian Dinca (icmd.tech), Hossein Lotfi@@hosselot(TrendAI Zero Day Initiative), Héloïse Gollier, Mathy Vanhoef (KU Leuven), Rosyna Keller(Totally Not Malicious Software), Adrián Pérez Martínez, Uluk Abylbekov, Zack Tickman, Dalibor Milanovic

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

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 26.4
  2. Compensating control

    For devices vulnerable to physical-access information viewing, ensure the device is properly locked/secured to prevent an attacker with physical access from viewing sensitive user information.

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.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

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.

2

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.

3

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

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

4

What problems does CVE-2026-28856 address?

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

5

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

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

Company

Resources

Contact

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