CVE-2026-20687

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.

CVSS v3.1

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

EPSS

0.34% chance of exploitation in the next 30 days, 26th percentile

Published

2026-03-25

Updated

2026-08-17

Proof-of-concept exploits (2)

• 0xjohnnydev/CVE-2026-20687-AppleJPEGDriver-UAF20★ · 2026-08-27
• enfilade-labs/CVE-2026-20687-AppleJPEGDriver-UAF2★ · 2026-04-22

References

• CVE Record
• NVD entry

Related

• CVE-2026-20637
• CVE-2026-28992
• CVE-2026-20685
• CVE-2026-2069
• CVE-2026-2068
• CVE-2026-20698