Memory Handling Vulnerability in Apple Operating Systems
CVE-2026-20634

5.5MEDIUM

Key Information:

Vendor

Apple
Status
Mac OS
Watch OS
Visionos
iOS And iPad OS
Vendor
CVE Published:
11 February 2026

What is CVE-2026-20634?

A vulnerability in Apple's operating systems arises from improper memory handling during the processing of maliciously crafted images. This flaw could potentially allow an unauthorized entity to access sensitive process memory, leading to data disclosure. The issue has been addressed in several updates, enhancing memory management across multiple Apple's platforms, including watchOS, tvOS, and various versions of macOS and iOS.

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Affected Version(s)

iOS and iPadOS < 26.3

iOS and iPadOS < 18.7

macOS < 26.3

References

https://support.apple.com/en-us/126348
https://support.apple.com/en-us/126352
https://support.apple.com/en-us/126353

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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