Apple recently released updates to three versions of macOS, stating that they fixed a serious screen sharing vulnerability in macOS Tahoe, Sequoia, and Sonoma.
If you are running any of these macOS versions and haven’t yet updated, you should do so immediately. The company later expanded on this . As the site notes, the fact that this is being actively exploited raises the prospect of attackers stealing credentials and more.
Earlier this month, Apple released macOS Sonoma 14.8.9, macOS Sequoia 15.7.9, and macOS Tahoe 26.6.1, with the release notes initially stating only that they provided “important security fixes” and were recommended for all users. At the time, Apple said there was no evidence of the vulnerability being exploited in the wild, but that is no longer the case, as Arstechnica reports.
It’s also best practice to ensure that screen sharing is only enabled when you actively want to use the feature.

