CVE-2026-20698

The issue was addressed with improved memory handling. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or corrupt kernel memory.

Affected

Apple · iOS and iPadOS · macOS · tvOS · visionOS · watchOS

CVSS v3.1 NVD

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

CVSS v3.1 CNA

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.33% chance of exploitation in the next 30 days, 24th percentile

Published

2026-03-25

Updated

2026-04-02

Proof-of-concept exploits (1)

• Somisomair/CVE-2026-20698-PF_ROUTE-Heap-Overflow6★ · 2026-03-30

Security advisories

• https://support.apple.com/en-us/126792
• https://support.apple.com/en-us/126794
• https://support.apple.com/en-us/126797
• https://support.apple.com/en-us/126798
• https://support.apple.com/en-us/126799

References

• CVE Record
• NVD entry

Related

• CVE-2026-43655