CVE-2026-20666: Input Validation

Published Feb 11, 2026
·
Updated

Admin Framework. A parsing issue in the handling of directory paths was addressed with improved path validation.

Other sources

An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.3. An app may be able to access sensitive user data.

— NVD

AppleEvents. An authorization issue was addressed with improved state management.

— Apple

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

— Apple

AppleMobileFileIntegrity. A parsing issue in the handling of directory paths was addressed with improved path validation.

— Apple

AppleMobileFileIntegrity. An injection issue was addressed with improved validation.

— Apple

Credit

Mickey Jin@@patch1t, Noah Gregory (wts.dev), Johnny Franks (zeroxjf), an anonymous researcher, Ryan Dowd@@_rdowd, jioundai, Amy (amys.website), @@cloudlldb, Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Anonymous(Trend Micro Zero Day Initiative), Yiğit Can YILMAZ@@yilmazcanyigit, Golden Helm Securities(Iru), Gergely Kalman@@gergely_kalman(Iru), Csaba Fitzl@@theevilbit(Iru), Gergely Kalman@@gergely_kalman, Google Threat Analysis Group, Kirin@@Pwnrin, Asaf Cohen, Murray Mike, George Karchemsky@@gkarchemsky(Trend Micro Zero Day Initiative), Jian Lee@@speedyfriend433, Keisuke Hosoda, Xin'an Zhou, Juefei Pu, Zhutian Liu, Zhiyun Qian, Zhaowei Tan, Srikanth V. Krishnamurthy, Mathy Vanhoef, CVE-2025-59375, Ron Masas(BreakPoint), Chunyu Song(NorthSea), Rodolphe Brunetti@@eisw0lf(Lupus Nova), Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), Pwn2car, Enis Maholli (enismaholli.com), Morris Richman@@morrisinlife, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, Gongyu Ma@@Mezone0, LeminLimez, Nathaniel Oh@@calysteon, HanQing(TSDubhe), Nan Wang@@eternalsakura13, Tom Van Goethem, EntryHi, Wang Yu(Cyberserval)

Affected Software

2 affected componentsFixes available
Apple macOS Tahoe<26.3
26.3
Apple macOS<26.3

Event History

Feb 11, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
Description
CVE Published
via MITRE·10:58 PM
Data Sourced
via MITRE·10:58 PM
DescriptionWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected 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-2026-20666?

CVE-2026-20666 is considered a moderate severity vulnerability due to its potential to allow unauthorized access to sensitive user data.

2

How do I fix CVE-2026-20666?

To fix CVE-2026-20666, update to macOS Tahoe version 26.3 or later, as the patch includes improved path validation and state management.

3

What impact does CVE-2026-20666 have on user data?

CVE-2026-20666 may allow applications to improperly access sensitive user data, posing a risk to user privacy.

4

What software is affected by CVE-2026-20666?

CVE-2026-20666 affects Apple macOS Tahoe versions up to and including 26.3.

5

Is there a workaround for CVE-2026-20666?

There is no documented workaround for CVE-2026-20666; updating to the fixed version is recommended.

Company

Resources

Contact

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