CVE-2026-28923: Buffer Overflow

Published May 11, 2026
·
Updated

A logging issue was addressed with improved data redaction. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. A malicious app may be able to break out of its sandbox.

Other sources

Accelerate. An out-of-bounds read was addressed with improved bounds checking.

— Apple

Accessibility. This issue was addressed through improved state management.

— Apple

Accounts. A permissions issue was addressed with additional restrictions.

— Apple

AirDrop. A reachable assertion was addressed with improved input validation.

— Apple

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

— Apple

Credit

Dave G., impost0r (ret2plt), Nicholas Soh, David Ige(Beryllium Security), Arni Hardarson, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Alex Radocea, Kun Peeks@@SwayZGl1tZyyy, Surya Kushwaha, Peter Malone, Aswin Kumar Gokula Kannan, Csaba Fitzl@@theevilbit(Iru), Suresh Sundaram, Jiri Ha, wdszzml, Atuin Automated Vulnerability Discovery Engine, Johnny Franks@@0xjohnny, Google Threat Analysis Group, Mihalis Haatainen, Ari Hawking, Ashish Kunwar, Vaagn Vardanian, Nathaniel Oh@@calysteon, 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, beist, Ryan Hileman via Xint Code (xint.io), Tristan Madani@@TristanInSec(Talence Security), Chris Betz, Dhiyanesh Selvaraj@@redroot97, Atul R V, Anton Pakhunov, Ricardo Prado, Ian van der Wurff (ian.nl), Ilya Sc. Jowell A., Morris Richman@@morrisinlife, Andrei Dodu, Matej Moravec@@MacejkoMoravec, Doron Assness, Amy (amys.website), YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), an anonymous researcher, Wang Yu, Brendon Tiszka(Google Project Zero), Seiji Sakurai@@HeapSmasher, Asaf Cohen, Arash Ale Ebrahim(SCy), Vamshi Paili, Tony Gorez for Reverse Society@@tonygo_, CVE-2026-1837, Niels Hofmans(TrendAI Zero Day Initiative), Anonymous(TrendAI Zero Day Initiative), CVE-2025-14017, CVE-2025-14819, Gandalf4a(PKU), Richard Zana, Somair Ansar, Robert Tran, Chris Betz(Talence Security), Ruslan Dautov, Prathamesh Walunj@@attahasa, Omar Cerrito, Michael DePlante@@izobashi(TrendAI Zero Day Initiative), Dan Raviv, Surya Kushwaha(Supernetworks), Robert Tran(Supernetworks), Peter Malone(Supernetworks), Dave G.(Supernetworks), Alex Radocea(Supernetworks), Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), Andy Koo@@andykoo(Hexens), David Ige - Beryllium Security, Cantina, Luke Francis, kwak kiyong / kakaogames, Vitaly Simonovich, Adel Bouachraoui, greenbynox, Do Young Park, Artem Dinaburg(Trail of Bits via Anthropic CVD), Yuhao Hu, Yuanming Lai, Chenggang Wu, Zhe Wang, Idan Masas(TrendAI Zero Day Initiative), 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, Aisle offensive security research team (Joshua Rogers(Calif), Luigino Camastra(Calif), Igor Morgenstern(Calif), (Calif), Guido Vranken)(Calif), Maher Azzouzi(Calif), Ngan Nguyen(Calif), dr3dd, Gia Bui@@yabeow(Calif), w0wbox, Milad Nasr, Nicholas Carlini with Claude, Anthropic, Khiem Tran, lebr0nli(National Yang Ming Chiao Tung University), Security, Systems Lab, Kenneth Hsu(Palo Alto Networks), Jérôme DJOUDER, Zhongcheng Li(IES Red Team), Jorge Welch@@jorgwelch

Affected Software

6 affected componentsFixes available
Apple macOS Sonoma<14.8.7
14.8.7
Apple macOS Sequoia<15.7.7
15.7.7
Apple macOS Tahoe<26.5
26.5
Apple macOS>=14.0<14.8.7
Apple macOS>=15.0<15.7.7
Apple macOS>=26.0<26.5

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 14.8.7
  2. Upgrade

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

    Fixed in 26.5
  3. Upgrade

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

    Fixed in 15.7.7
  4. Upgrade

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

    Fixed in 15.7.7Patch macOS Sequoia 15.7.7
  5. Upgrade

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

    Fixed in 14.8.7Patch macOS Sonoma 14.8.7
  6. Upgrade

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

    Fixed in 26.5Patch macOS Tahoe 26.5

Event History

May 11, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·08:07 PM
Data Sourced
via MITRE·08:07 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-2026-28923?

CVE-2026-28923 is a critical vulnerability that could allow a malicious app to break out of its sandbox.

2

How do I fix CVE-2026-28923?

To fix CVE-2026-28923, update your macOS to version 15.7.7 for Sequoia, 14.8.7 for Sonoma, or 26.5 for Tahoe.

3

Which versions of macOS are affected by CVE-2026-28923?

Affected versions include macOS Sonoma prior to 14.8.7, macOS Sequoia prior to 15.7.7, and macOS Tahoe prior to 26.5.

4

What type of issue is addressed in CVE-2026-28923?

CVE-2026-28923 addresses a logging issue with improved data redaction and out-of-bounds read vulnerabilities.

5

Can CVE-2026-28923 be exploited by regular applications?

Yes, a malicious application may exploit CVE-2026-28923 to gain elevated privileges and escape its sandbox.

Company

Resources

Contact

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