Downgrade Issue in Intel-Based Mac Computers Affects User Data Security
CVE-2025-43390

5.5MEDIUM

Key Information:

Vendor

Apple
Status
Mac OS
Vendor
CVE Published:
4 November 2025

What is CVE-2025-43390?

A security issue impacting Intel-based Mac computers has been identified, where a downgrade vulnerability could permit unauthorized access to sensitive user data. To mitigate this risk, Apple has implemented enhanced code-signing restrictions to secure the system environment. Users are encouraged to update to macOS Sequoia version 15.7.2 or later to ensure their devices are protected against potential exploitation.

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Deploy the Patch

Affected Version(s)

macOS < 26.1

macOS < 15.7

References

https://support.apple.com/en-us/125634
https://support.apple.com/en-us/125635

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

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