A security patch debuted today just for Apple Watch Series 4. watchOS 5.3.2 fixes a flaw in the software that hackers might exploit.
This same patch for earlier Apple wearables was introduced two weeks ago.
watchOS 5.3.2 stomps a single Apple Watch bug
This small update removes a vulnerability from the wearable in which “a remote attacker may be able to cause unexpected application termination or arbitrary code execution,” according to Apple’s support website.
watchOS 6 launched last month, and it can be installed on Apple Watch Series 3 and newer. In addition to plenty of new features, it also patches the relevant security hole. However, it requires an iPhone running iOS 13 for installation. Those who are still running iOS 12.x can’t upgrade their wearable to version 6, but can put watchOS 5.3.2 on their wrist computer.
From Cult of Mac