PT-2026-27531 · Apple · Macos Sequoia+8

Published 2026-02-11 · Updated 2026-06-13 · CVE-2026-20637

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions visionOS versions prior to 26.3 iOS versions prior to 18.7.7 and 26.3 iPadOS versions prior to 18.7.7 and 26.3 macOS Sequoia versions prior to 15.7.5 macOS Sonoma versions prior to 14.8.5 macOS Tahoe versions prior to 26.3 tvOS versions prior to 26.3 watchOS versions prior to 26.3

Description A use after free issue in the AppleKeyStore component occurs due to improper memory management. This condition allows an application to cause unexpected system termination, resulting in a denial of service.

Recommendations Update visionOS to version 26.3. Update iOS to version 18.7.7 or 26.3. Update iPadOS to version 18.7.7 or 26.3. Update macOS Sequoia to version 15.7.5. Update macOS Sonoma to version 14.8.5. Update macOS Tahoe to version 26.3. Update tvOS to version 26.3. Update watchOS to version 26.3.

Exploit

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-04651

CVE-2026-20637

Affected Products

Apple Macos

Ios

Ipados

Macos Sequoia

Macos Sonoma

Macos Tahoe

Tvos

Visionos

Watchos

References · 14

• 🔥 https://github.com/enfilade-labs/CVE-2026-20637-AppleSEPKeyStore-UAF · Exploit
• https://support.apple.com/en-us/126351 · Vendor Advisory
• https://support.apple.com/en-us/126793 · Vendor Advisory
• https://support.apple.com/en-us/126352 · Vendor Advisory
• https://support.apple.com/en-us/126795 · Vendor Advisory
• https://support.apple.com/en-us/126353 · Vendor Advisory
• https://support.apple.com/en-us/126348 · Vendor Advisory
• https://support.apple.com/en-us/126796 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20637 · Security Note
• https://support.apple.com/en-us/126346 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04651 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20637 · Note
• https://t.me/poxek/6188 · Telegram Post
• https://twitter.com/CVEarity/status/2044461343999471833 · Twitter Post