CVE-2026-20699
Code-Signing Downgrade Allows Sensitive Data Access on Intel Macs
Publication date: 2026-03-25
Last updated on: 2026-03-25
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | macos | From 26.0 (inc) to 26.3 (exc) |
| apple | macos | From 14.0 (inc) to 14.8.5 (exc) |
| apple | macos | From 15.0 (inc) to 15.7.5 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-347 | The product does not verify, or incorrectly verifies, the cryptographic signature for data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a downgrade issue affecting Intel-based Mac computers. It involves a weakness that was addressed by adding additional code-signing restrictions in certain macOS versions. Essentially, an application may exploit this issue to gain access to user-sensitive data.
How can this vulnerability impact me? :
The impact of this vulnerability is that an application could potentially access sensitive data belonging to the user without proper authorization. This could lead to privacy breaches or unauthorized data exposure on affected Intel-based Mac computers.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Intel-based Mac computers to the fixed versions of macOS: macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, or macOS Tahoe 26.3 or 26.4.