Logic Issue in Apple Mail Previews Affecting macOS and iOS
CVE-2026-20673

5.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-20673?

A logic issue affecting Apple Mail has been identified, which can lead to unintended consequences when loading remote content in messages. This vulnerability has been addressed with improved checks, ensuring that users can better manage how mail previews operate. Users are advised to note that disabling 'Load remote content in messages' may not be effective for all previews. Apple has provided updates to rectify these issues in various operating systems, enhancing overall security for affected user environments.

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Affected Version(s)

iOS and iPadOS < 18.7

macOS < 26.3

macOS < 15.7

References

https://support.apple.com/en-us/126348
https://support.apple.com/en-us/126349
https://support.apple.com/en-us/126350

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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