CVE-2026-28873: 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

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

— Apple

App Intents. A logic issue was addressed with improved restrictions.

— Apple

App Protection. The issue was addressed with improved checks.

— Apple

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

— 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, Vamshi Paili, Tony Gorez for Reverse Society@@tonygo_, David Ige(Beryllium Security), Suresh Sundaram, Google Threat Analysis Group, Mihalis Haatainen, Ari Hawking, Ashish Kunwar, Vaagn Vardanian, Yiğit Can YILMAZ@@yilmazcanyigit, Robert Tran(STAR Labs SG Pte), popku1337(STAR Labs SG Pte), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Aswin kumar Gokulakannan, Calif.io in collaboration with Claude, Anthropic Research, Csaba Fitzl@@theevilbit(Iru), Ryan Hileman via Xint Code (xint.io), Tristan Madani@@TristanInSec(Talence Security), Chris Betz, Dhiyanesh Selvaraj@@redroot97, Ruslan Dautov, Atul R V, Ricardo Prado, Anton Pakhunov, Ian van der Wurff (ian.nl), Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Asaf Cohen, Ilya Sc. Jowell A., Peter Malone, Doron Assness, Adriatik Raci, Cantina, Idan Masas(TrendAI Zero Day Initiative), DARKNAVY@@DarkNavyOrg(TrendAI Zero Day Initiative), Anonymous(TrendAI Zero Day Initiative), Luka Rački, Mateusz Krzywicki (iVerify.io), wac(TrendAI Zero Day Initiative), Kookhwan Lee(TrendAI Zero Day Initiative), Maher Azzouzi, Vitaly Simonovich, Luke Francis, kwak kiyong / kakaogames, Adel Bouachraoui, lebr0nli(National Yang Ming Chiao Tung University), Security, Systems Lab, Wang Yu, Brendon Tiszka(Google Project Zero)

Affected Software

8 affected componentsFixes available
Apple iOS<18.7.9
18.7.9
Apple iPadOS<18.7.9
18.7.9
Apple iOS<26.4
26.4
Apple iPadOS<26.4
26.4
Apple iPadOS<18.7.9
Apple iPadOS>=26.0<26.4
Apple iPhone OS<18.7.9
Apple iPhone OS>=26.0<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 18.7.9
  2. Upgrade

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

    Fixed in 26.4

Event History

Mar 24, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
May 11, 2026
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected 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-2026-28873?

CVE-2026-28873 has a high severity rating of 7.5.

2

What are the main issues addressed in CVE-2026-28873?

CVE-2026-28873 addresses authentication, authorization, buffer overflow, and logic issues with improved state management and bounds checking.

3

Which operating systems are affected by CVE-2026-28873?

CVE-2026-28873 affects Apple iPadOS, Apple iOS, and Apple iPhone OS.

4

How do I fix CVE-2026-28873?

To fix CVE-2026-28873, update your device to the latest version of iPadOS, iOS, or iPhone OS provided by Apple.

5

What vulnerabilities are associated with CVE-2026-28873?

CVE-2026-28873 is associated with vulnerabilities related to input validation, buffer overflow, race condition, integer overflow, use after free, and null pointer dereference.

Company

Resources

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