PT-2026-27541 · Apple · Macos Sequoia+6

CVE-2026-20687 · Published 2026-03-24 · Updated 2026-06-13

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions iOS versions prior to 18.7.7 iPadOS versions prior to 18.7.7 macOS Sequoia versions prior to 15.7.5 macOS Tahoe versions prior to 26.4 tvOS versions prior to 26.4 watchOS versions prior to 26.4 iOS versions prior to 26.4.1

Description A use after free issue, which occurs when an application continues to use a pointer after it has been freed, was identified in the AppleJPEGDriver. This flaw may allow an app to cause unexpected system termination or write to kernel memory.

Recommendations Update iOS to version 18.7.7 or 26.4.1. Update iPadOS to version 18.7.7 or 26.4. Update macOS Sequoia to version 15.7.5. Update macOS Tahoe to version 26.4. Update tvOS to version 26.4. Update watchOS to version 26.4.

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-20687

Affected Products

Apple Macos

Ios

Ipados

Macos Sequoia

Macos Tahoe

Tvos

Watchos

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2026-20687 · Security Note
• https://support.apple.com/en-us/126794 · Vendor Advisory
• https://support.apple.com/en-us/126797 · Vendor Advisory
• https://support.apple.com/en-us/126792 · Vendor Advisory
• https://support.apple.com/en-us/126795 · Vendor Advisory
• https://support.apple.com/en-us/126793 · Vendor Advisory
• https://support.apple.com/en-us/126798 · Vendor Advisory
• https://twitter.com/zeroxjf/status/2043480371329638639 · Twitter Post
• https://t.me/poxek/6188 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20687 · Note
• https://twitter.com/CVEarity/status/2044461998373802075 · Twitter Post