CVE-2026-20665: Use After Free

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

Admin Framework. A path handling issue was addressed with improved validation.

— Apple

apache. This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org.

— Apple

App Protection. The issue was addressed with improved checks.

— Apple

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

— Apple

Credit

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, an anonymous researcher, Gongyu Ma@@Mezone0, Tuan D. Hoang, Hazem Issa, Yongdae Kim @ KAIST SysSec Lab, Alvin Aries Tapia, 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, Alex Radocea, Yongdae Kim @ SysSec, KAIST, Caspian Tarafdar, Andrew Becker, Héloïse Gollier, Mathy Vanhoef (KU Leuven), Rosyna Keller(Totally Not Malicious Software), Adrián Pérez Martínez, Uluk Abylbekov, Zack Tickman, Justin Cohen(Google), Jex Amro, Johnny Franks (zeroxjf), Kirin@@Pwnrin, iG0x72(XiguaSec), JJ(XiguaSec), Lehan Dilusha Jayasinghe, Mike Cardwell(grepular), Bob Lord, Ryan Dowd@@_rdowd, CVE-2025-55753, CVE-2025-58098, CVE-2025-59775, CVE-2025-65082, CVE-2025-66200, Mickey Jin@@patch1t, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), Talal Haj Bakry(Mysk Inc), Tommy Mysk@@mysk_co(Mysk Inc), Zhongquan Li@@Guluisacat, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Asaf Cohen, 风沐云烟@@binary_fmyy, Minghao Lin@@Y1nKoc, Ye Zhang(Baidu Security), Ryan Dowd@@_rdowd(Iru), Csaba Fitzl@@theevilbit(Iru), Joseph Ravichandran@@0xjprx(MIT CSAIL), hari shanmugam, Yuebin Sun@@yuebinsun2020(SecuRing), an anonymous researcher(SecuRing), Nathaniel Oh@@calysteon(SecuRing), Kirin@@Pwnrin(SecuRing), Wojciech Regula(SecuRing), Joshua Jewett@@JoshJewett33, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Matej Moravec@@MacejkoMoravec, Dawuge(Shuffle Team), Hunan University, Gergely Kalman@@gergely_kalman, Andrei Dodu, Morris Richman@@morrisinlife, Kun Peeks@@SwayZGl1tZyyy, Gyujeong Jin at Team.0xb6@@G1uN4sh, Christian Kohlschütter, Sreejith Krishnan R, Dave G., @@pixiepointsec, Luke Roberts@@rookuu, Pedro Tôrres@@t0rr3sp3dr0

Affected Software

18 affected componentsFixes available
Apple tvOS<26.4
26.4
Apple iOS<18.7.7
18.7.7
Apple iPadOS<18.7.7
18.7.7
Apple iOS<26.4
26.4
Apple iPadOS<26.4
26.4
Apple macOS Tahoe<26.4
26.4
Apple WatchOS<26.4
26.4
Apple visionOS<26.4
26.4
Apple Safari<26.4
26.4
Apple Safari<26.4
Apple iPadOS<18.7.7
Apple iPadOS>=26.0<26.4
Apple iPhone OS<18.7.7
Apple iPhone OS>=26.0<26.4
Apple macOS<26.4
Apple tvOS<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
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Affected 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
Mar 30, 2026
Data Sourced
via Red Hat·12:32 PM
DescriptionSeverityAffected Software
May 12, 2026
Updated
via Apple·06:36 PM
DescriptionWeaknessAffected Software
Updated
via Apple·06:36 PM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-20665?

The severity of CVE-2026-20665 is classified as a high-risk vulnerability due to authentication and authorization issues.

2

How do I fix CVE-2026-20665?

To fix CVE-2026-20665, ensure you update to the latest versions of affected Apple software, specifically 26.4 for tvOS, iOS, iPadOS, macOS, WatchOS, and visionOS or 18.7.7 for iPhone and iPadOS.

3

What systems are affected by CVE-2026-20665?

CVE-2026-20665 affects multiple Apple products including tvOS, iOS, iPadOS, macOS Tahoe, WatchOS, and Safari.

4

What types of issues does CVE-2026-20665 address?

CVE-2026-20665 addresses authentication, authorization, and path handling issues in its affected versions.

5

When was CVE-2026-20665 published?

CVE-2026-20665 was published as a vulnerability on the official Apple advisory page.

Company

Resources

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