CVE-2026-20654

MEDIUM

Apple iOS iPadOS macOS tvOS visionOS watchOS < 26.3 - Denial of Service via Memory Corruption

Title source: llm
STIX 2.1

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An app may be able to cause unexpected system termination.

References (5)

Core 5
Core References
Release Notes, Vendor Advisory
https://support.apple.com/en-us/126346
Release Notes, Vendor Advisory
https://support.apple.com/en-us/126348
Release Notes, Vendor Advisory
https://support.apple.com/en-us/126351
Release Notes, Vendor Advisory
https://support.apple.com/en-us/126352
Release Notes, Vendor Advisory
https://support.apple.com/en-us/126353

Scores

CVSS v3 5.5
EPSS 0.0002
EPSS Percentile 3.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-119
Status published
Products (11)
Apple/iOS and iPadOS < 26.3
apple/ipados < 26.3
apple/iphone_os < 26.3
apple/macos < 26.3
Apple/macOS < 26.3
apple/tvos < 26.3
Apple/tvOS < 26.3
apple/visionos < 26.3
Apple/visionOS < 26.3
apple/watchos < 26.3
... and 1 more
Published Feb 11, 2026
Tracked Since Feb 18, 2026