PT-2026-7759 · Apple · Apple Macos+3

Wang Yu · CVE-2026-20621 · Published 2026-02-11 · Updated 2026-02-17

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions macOS versions prior to Tahoe 26.3 macOS versions prior to Sonoma 14.8.4 macOS versions prior to Sequoia 15.7.4 iOS versions prior to 18.7.5 iPadOS versions prior to 18.7.5 visionOS versions prior to 26.3

Description The issue involves improved memory handling. An application may be capable of causing unexpected system termination or corrupting kernel memory.

Recommendations Update macOS to version 26.3 or later. Update macOS to version 14.8.4 or later. Update macOS to version 15.7.4 or later. Update iOS to version 18.7.5 or later. Update iPadOS to version 18.7.5 or later. Update visionOS to version 26.3 or later.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2026-20621

Affected Products

Apple Macos

Ios

Ipados

Visionos

References · 11

• https://osv.dev/vulnerability/CVE-2026-20621 · Vendor Advisory
• https://support.apple.com/en-us/126353 · Vendor Advisory
• https://support.apple.com/en-us/126346 · Vendor Advisory
• https://support.apple.com/en-us/126348 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20621 · Security Note
• https://support.apple.com/en-us/126347 · Vendor Advisory
• https://support.apple.com/en-us/126349 · Vendor Advisory
• https://support.apple.com/en-us/126350 · Vendor Advisory
• https://t.me/cveNotify/152211 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20621 · Note
• https://twitter.com/CVEnew/status/2021799479285063713 · Twitter Post