CVE-2021-1861

Name of the Vulnerable Software and Affected Versions: macOS Big Sur versions prior to 11.3

Description: An issue existed in determining cache occupancy, which could allow a malicious website to track users by setting state in a cache. The issue was addressed through improved logic.

Recommendations: For macOS Big Sur versions prior to 11.3, update to macOS Big Sur 11.3 to resolve the issue. As a temporary workaround, consider restricting access to potentially malicious websites to minimize the risk of exploitation.