Apple has issued security-focused updates for macOS Sonoma 14.8.9 and Sequoia 15.7.9, addressing a vulnerability that could let unauthorised users exploit Screen Sharing on supported Macs, emphasising its ongoing commitment to supporting older operating systems with critical patches.
Apple has issued macOS Sonoma 14.8.9 and macOS Sequoia 15.7.9, a pair of security updates that appear aimed squarely at closing a Screen Sharing vulnerability rather than adding any new features. According to The Mac Observer, the updates arrived on August 6 and were not seeded through developer or public beta programmes before release. Similar to Apple’s recent security-only maintenance releases for older versions of its software, the company is treating the downloads as important patches for users who remain on Sonoma or Sequoia.
The new builds are identified as macOS Sonoma 14.8.9 (23J631) and macOS Sequoia 15.7.9 (24G830). Apple says the flaw could allow someone on the same network to authenticate to Screen Sharing without valid credentials, a problem tracked as CVE-2026-65400. The company says it addressed the issue by improving state management in macOS, which should stop the insecure authentication path from being exploited.
The updates are available now through Software Update on supported Macs. MacWorld has reported that Apple’s recent security releases typically require an internet connection and a restart, and it notes that the same general update route applies across Apple’s platforms. In practice, users are being urged to install the patch as soon as possible, especially because the issue affects a network-facing service.
Apple has continued to back older operating systems with security fixes even as it moves newer devices and users on to later versions of macOS. MacWorld has also reported that the company has done the same for prior releases such as Sonoma and Ventura, underlining Apple’s long-standing approach of extending security support beyond the latest flagship system. For users still on Sonoma or Sequoia, these latest updates are a reminder that maintaining an older release does not mean avoiding new security work.
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