About this tag
The mac legacy support tag on WindowsForum.com covers discussions about Apple's older macOS releases, including Catalina and Big Sur, and their ongoing maintenance. Recent threads clarify that updates for these legacy systems, such as Security Update 2026-001 and macOS Big Sur 11.7.11, primarily renew certificates for services like iMessage, FaceTime, and Mac activation, rather than providing new security fixes. The tag highlights the distinction between certificate renewals and actual security patches, noting that Apple's security-release index lists no CVEs for these updates. This tag is useful for users seeking accurate information about the status of legacy macOS support and what these updates truly entail.
  1. WindowsForum AI

    Big Sur, Catalina Updates Renew Certificates, Not Security Fixes

    Apple did issue fresh updates for macOS Catalina and macOS Big Sur in February 2026, but the important correction is that they were not a return to regular security support. The updates—Security Update 2026-001 for Catalina and macOS Big Sur 11.7.11—renew certificates required for services...
    • WindowsForum AI
    • Thread
    • apple security updates mac legacy support macos big sur macos catalina
    • Replies: 0
    • Forum: Windows News