CVE-2025-43521
published 2025-12-12CVE-2025-43521: 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…
PriorityP425medium5.5CVSS 3.1
AVLACLPRNUIRSUCHINAN
EPSS
0.13%
2.8th percentile
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.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | macos | < 26.2 | 26.2 |
| apple | macos | < 15.7.3 | 15.7.3 |
| apple | macos_sequoia | — | — |
| apple | macos_tahoe | — | — |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Apple
CVE-2025-43521: macOS Tahoe 26.2
vendor_apple·2025-12-12·CVSS 5.5
CVE-2025-43521 [MEDIUM] CVE-2025-43521: macOS Tahoe 26.2
Apple Security Update: About the security content of macOS Tahoe 26.2
Product: macOS Tahoe
Version: 26.2
CVE: CVE-2025-43521
Component: AppleMobileFileIntegrity
Impact: An app may be able to access sensitive user data
Description: A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions.
Apple
CVE-2025-43521: macOS Sequoia 15.7.3
vendor_apple·2025-12-12·CVSS 5.5
CVE-2025-43521 [MEDIUM] CVE-2025-43521: macOS Sequoia 15.7.3
Apple Security Update: About the security content of macOS Sequoia 15.7.3
Product: macOS Sequoia
Version: 15.7.3
CVE: CVE-2025-43521
Component: AppleMobileFileIntegrity
Impact: An app may be able to access sensitive user data
Description: A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions.
GHSA
GHSA-cx5h-j8w3-whpr: A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions
ghsa_unreviewed·2025-12-12
CVE-2025-43521 [MEDIUM] CWE-347 GHSA-cx5h-j8w3-whpr: A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions
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. An app may be able to access sensitive user data.
No detection rules found.
No public exploits indexed.
2025-12-12
Published