CVE-2025-43521 Details
Description
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3, macOS Tahoe 26.2. An app may be able to access sensitive user data.
A vulnerability in macOS Sequoia affecting Intel-based Mac computers allows apps to access sensitive user data. This issue arises from a downgrade problem that has been addressed with additional code-signing restrictions. The vulnerability is present in several versions of macOS Sequoia prior to 15.7.3.
Users can upgrade to macOS Sequoia 15.7.3 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Dec 15, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://support.apple.com/en-us/125886 | [email protected] | |
| https://support.apple.com/en-us/125887 | [email protected] | Release NotesVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-347 | Improper Verification of Cryptographic Signature | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| apple macos | < 15.7.3 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 2, 2026 | CVE Modified | [email protected] |
| Dec 17, 2025 | CVE Modified | [email protected] |
| Dec 15, 2025 | Initial Analysis | [email protected] |
| Dec 15, 2025 | CVE Modified | CISA-ADP |
| Dec 12, 2025 | New CVE Received | [email protected] |