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 v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

1.32% chance of exploitation in the next 30 days, 69th percentile

CISA KEV

added 2026-02-12

Published

2026-02-11

Updated

2026-04-02

Proof-of-concept exploits (3)

• R3n3r0/CVE-2026-2070013★ · 2026-05-23
• notthemystery/CVE-2026-20700-POC-that-ll-never-work0★ · 2026-05-26
• D3CRYPTORDE/GuentherJB

References

• CVE Record
• NVD entry

Related

• CVE-2024-26256
• CVE-2025-5915
• CVE-2026-0049
• CVE-2026-27280
• CVE-2026-6300
• CVE-2026-4812