CVE-2026-20621

critical

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.

References

https://support.apple.com/en-us/126353

https://support.apple.com/en-us/126350

https://support.apple.com/en-us/126349

https://support.apple.com/en-us/126348

https://support.apple.com/en-us/126347

https://support.apple.com/en-us/126346

Details

Source: Mitre, NVD

Published: 2026-02-11

Updated: 2026-02-12

Risk Information

CVSS v2

Base Score: 7.1

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Severity: Critical

EPSS

EPSS: 0.00024