CVE-2025-43521

MEDIUM

macOS < 15.7.3 - Unprotected User Data Exposure via Cryptographic Signature Verification Issue

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125887

Scores

CVSS v3 5.5
EPSS 0.0013
EPSS Percentile 2.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-347
Status published
Products (3)
apple/macos < 15.7.3
Apple/macOS < 15.7.3
Apple/macOS < 26.2
Published Dec 12, 2025
Tracked Since Feb 18, 2026