CVE-2026-20700

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.

CVSS v3 vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-119

Threats tracking this CVE

• Apple Zero-Day CVE-2026-20700: Memory Corruption Enabling Arbitrary Code Execution — Google TAG-Discovered 'Extremely Sophisticated' Targeted Attack — CRITICAL

References

• https://support.apple.com/en-us/126346
• https://support.apple.com/en-us/126348
• https://support.apple.com/en-us/126351
• https://support.apple.com/en-us/126352
• https://support.apple.com/en-us/126353
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700

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