CVE-2026-20636: Use After Free

Published Feb 11, 2026
·
Updated

Accessibility. A privacy issue was addressed by removing sensitive data.

Other sources

Accessibility. An inconsistent user interface issue was addressed with improved state management.

— Apple

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

— Apple

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

Credit

Amy (amys.website), Mickey Jin@@patch1t, Nathaniel Oh@@calysteon, HanQing(TSDubhe), Nan Wang@@eternalsakura13, Tom Van Goethem, EntryHi, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Dalibor Milanovic, Noah Gregory (wts.dev), Óscar García Pérez, Stanislav Jelezoglo, Kirin@@Pwnrin, Viktor Lord Härringtón, Enis Maholli (enismaholli.com), an anonymous researcher, Gongyu Ma@@Mezone0, LeminLimez, Jacob Prezant (prezant.us), Wang Yu(Cyberserval), Ron Masas(BreakPoint), Johnny Franks (zeroxjf), Ryan Dowd@@_rdowd, jioundai, 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, 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, Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), @@cloudlldb, Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Asaf Cohen, Murray Mike, Chunyu Song(NorthSea), Pwn2car, CVE-2026-20622, Morris Richman@@morrisinlife, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, Wong Wee Xiang, Loh Boon Keat, Nils Hanff @chaos.social)@@nils1729(Hasso Plattner Institute), Atul Kishor Jaiswal, Zhongcheng Li(IES Red Team), Richard Hyunho Im at Route Zero Security (routezero.security)@@richeeta

Affected Software

29 affected componentsFixes available
Apple Safari<26.3
26.3
Apple iOS<26.3
26.3
Apple iPadOS<26.3
26.3
Apple visionOS<26.3
26.3
Apple Safari<26.3
Apple iPadOS<26.3
Apple iPhone OS<26.3
Apple macOS<26.3
Apple visionOS<26.3
Apple macOS Tahoe<26.3
26.3
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk*
ubuntu/qtwebkit-source*
ubuntu/webkitgtk*
ubuntu/webkit2gtk*
ubuntu/qtwebkit-opensource-src*
ubuntu/qtwebkit-source*
ubuntu/webkitgtk*
ubuntu/webkit2gtk*
ubuntu/qtwebkit-opensource-src*
ubuntu/wpewebkit*
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk*
ubuntu/wpewebkit*
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk<2.52.3-0ubuntu0.24.04.1
2.52.3-0ubuntu0.24.04.1
ubuntu/webkit2gtk<2.52.3-0ubuntu0.25.10.1
2.52.3-0ubuntu0.25.10.1
debian/webkit2gtk
2.50.6-1~deb12u22.50.6-1~deb12u12.52.6-1~deb13u12.54.0-1~deb13u32.52.6-12.54.2-2
debian/wpewebkit<=2.38.6-1, <=2.48.3-1
2.54.2-1

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 26.3
  2. Upgrade

    Upgrade ubuntu/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.52.3-0ubuntu0.24.04.1
  3. Upgrade

    Upgrade ubuntu/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.52.3-0ubuntu0.25.10.1
  4. Upgrade

    Upgrade debian/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.50.6-1~deb12u2Fixed in 2.50.6-1~deb12u1Fixed in 2.52.6-1~deb13u1Fixed in 2.54.0-1~deb13u3Fixed in 2.52.6-1Fixed in 2.54.2-2
  5. Upgrade

    Upgrade debian/wpewebkit to a version that resolves this vulnerability.

    Fixed in 2.54.2-1
  6. Remove

    Remove vulnerable code from your environment.

    Remove the vulnerable code as part of the fix described in the material.

Event History

Feb 11, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·10:58 PM
Data Sourced
via MITRE·10:58 PM
DescriptionWeakness
Data Sourced
via OSV·11:16 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
Mar 18, 2026
Data Sourced
via Red Hat·08:20 PM
DescriptionSeverityAffected 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-2026-20636?

CVE-2026-20636 is classified as a moderate severity vulnerability affecting several Apple products.

2

How do I fix CVE-2026-20636?

To fix CVE-2026-20636, update your software to the latest version 26.3 or later for affected Apple products.

3

Which products are affected by CVE-2026-20636?

CVE-2026-20636 affects Apple visionOS, iOS, iPadOS, macOS Tahoe, and Safari versions up to 26.3.

4

What type of vulnerabilities are addressed in CVE-2026-20636?

CVE-2026-20636 addresses a privacy issue and improves state management in user interfaces and path validation.

5

What are the potential risks of not addressing CVE-2026-20636?

Not addressing CVE-2026-20636 may expose sensitive data and lead to inconsistent user interface behavior or path handling issues.

Company

Resources

Contact

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