CVE-2026-28872: Input Validation

Published Mar 24, 2026
·
Updated

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

Other sources

A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.4 and iPadOS 26.4. A remote attacker may be able to cause a denial-of-service.

— MITRE

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

Credit

Justin Cohen(Google), Jex Amro, Hazem Issa, Tuan D. Hoang, Yongdae Kim @ SysSec, KAIST, 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@@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, 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, Rosyna Keller(Totally Not Malicious Software), Adrián Pérez Martínez, Uluk Abylbekov, Zack Tickman, Héloïse Gollier, Mathy Vanhoef (KU Leuven), 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-2026-28872?

CVE-2026-28872 has a moderate severity level primarily due to the potential for denial-of-service attacks.

2

How do I fix CVE-2026-28872?

To fix CVE-2026-28872, update your device to iOS 18.7.9, iPadOS 18.7.9, iOS 26.4, or iPadOS 26.4.

3

What type of issue is described in CVE-2026-28872?

CVE-2026-28872 describes an authentication issue related to state management and a resource exhaustion issue due to inadequate input validation.

4

Who is affected by CVE-2026-28872?

CVE-2026-28872 affects users of affected versions of Apple iOS and iPadOS prior to the specified remediation versions.

5

Can CVE-2026-28872 be exploited remotely?

Yes, a remote attacker may exploit CVE-2026-28872 to cause a denial-of-service on affected devices.

Company

Resources

Contact

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