HIGH CISA KEV Actively Exploited

CVE-2026-20700

Memory Corruption Allows Arbitrary Code Execution on Apple Operating Systems

CVSS v3

7.8

HIGH

EPSS Score

0.4 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

active

SSVC status

Description

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

CISA Known Exploited Vulnerability

Date Added: 2026-02-12
Patch Due Date: 2026-03-05
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: 3.1
Published: 2026-02-11
Last Modified: 2026-03-25

Frequently asked questions

What is CVE-2026-20700?

Is CVE-2026-20700 actively exploited?

Yes. CVE-2026-20700 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 3/5/2026.

What is the CVSS score for CVE-2026-20700?

CVE-2026-20700 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.1.

Is CVE-2026-20700 affecting your environment?

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