CVE-2026-20700: Apple Multiple Buffer Overflow Vulnerability

Published Feb 11, 2026
·
Updated

A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report.

Other sources

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

— Apple

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

Apple iOS, macOS, tvOS, watchOS, and visionOS contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow an attacker with memory write the capability to execute arbitrary code.

— CISA

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

— Apple

Credit

Johnny Franks (zeroxjf), an anonymous researcher, jioundai, Anonymous(Trend Micro Zero Day Initiative), Yiğit Can YILMAZ@@yilmazcanyigit, Golden Helm Securities(Iru), Gergely Kalman@@gergely_kalman(Iru), Csaba Fitzl@@theevilbit(Iru), Google Threat Analysis Group, Asaf Cohen, George Karchemsky@@gkarchemsky(Trend Micro Zero Day Initiative), Jian Lee@@speedyfriend433, Xin'an Zhou, Juefei Pu, Zhutian Liu, Zhiyun Qian, Zhaowei Tan, Srikanth V. Krishnamurthy, Mathy Vanhoef, CVE-2025-59375, Noah Gregory (wts.dev), Gongyu Ma@@Mezone0, EntryHi, Wong Wee Xiang, Loh Boon Keat, Jacob Prezant (prezant.us), Nils Hanff @chaos.social)@@nils1729(Hasso Plattner Institute), Amy (amys.website), Atul Kishor Jaiswal, Gergely Kalman@@gergely_kalman, Kirin@@Pwnrin, Keisuke Hosoda, Zhongcheng Li(IES Red Team), Richard Hyunho Im at Route Zero Security (routezero.security)@@richeeta, Ron Masas(BreakPoint), Rodolphe Brunetti@@eisw0lf(Lupus Nova), Dalibor Milanovic, Óscar García Pérez, Stanislav Jelezoglo, Viktor Lord Härringtón, Enis Maholli (enismaholli.com), LeminLimez, Nathaniel Oh@@calysteon, HanQing(TSDubhe), Nan Wang@@eternalsakura13, Tom Van Goethem, Wang Yu(Cyberserval), Mickey Jin@@patch1t, Ryan Dowd@@_rdowd, @@cloudlldb, Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), Murray Mike, Chunyu Song(NorthSea), Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), Pwn2car, Morris Richman@@morrisinlife, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir

Affected Software

13 affected componentsFixes available
Apple visionOS<26.3
26.3
Apple iOS<26.3
26.3
Apple iPadOS<26.3
26.3
Apple macOS Tahoe<26.3
26.3
Apple tvOS<26.3
26.3
Apple WatchOS<26.3
26.3
Apple iPadOS<26.3
Apple iPhone OS<26.3
Apple macOS<26.3
Apple tvOS<26.3
Apple visionOS<26.3
Apple WatchOS<26.3
Apple Multiple Products

Remediation

Information

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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
Affected Software
Updated
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 NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
Feb 12, 2026
Known Exploited
via CISA·12:00 AM
Data Sourced
via CISA·12:00 AM
RemedyDescriptionAffected Software
News Published
via BleepingComputer·01:06 AM
News Published
via BleepingComputer·01:08 AM
News Published
via The Register·02:01 PM
News Published
via The Register·02:05 PM
Mar 18, 2026
News Published
via BleepingComputer·02:02 PM
News Published
via The Register·09:39 PM
Mar 23, 2026
News Published
via BleepingComputer·08:37 AM
Apr 1, 2026
News Published
via BleepingComputer·09:50 PM

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-2026-20700?

CVE-2026-20700 is considered a critical vulnerability that could allow an attacker to execute arbitrary code on affected devices.

2

How do I fix CVE-2026-20700?

To fix CVE-2026-20700, update your devices to the latest versions: watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3, or iPadOS 26.3.

3

Which Apple products are affected by CVE-2026-20700?

CVE-2026-20700 affects Apple visionOS, iOS, iPadOS, macOS Tahoe, tvOS, and watchOS versions prior to 26.3.

4

Can CVE-2026-20700 be exploited remotely?

Yes, CVE-2026-20700 can be exploited remotely if the attacker has memory write capability on the affected device.

5

Is there a patch available for CVE-2026-20700?

Yes, a patch for CVE-2026-20700 is included in the updates for watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3, and iPadOS 26.3.

Company

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