Apple today pushed security updates for devices that cannot be upgraded to iOS 14, iOS 12.5.4 and iPadOS 12.5.4. This is a security update, which fixes serious security issues. It is worth mentioning that Apple today also released the third developer test version of iOS 14.7 and macOS Big Sur 11.5, two weeks after the first test version.
iOS 12.5.4 update details:
Security Question
- Maliciously crafted certificates can lead to arbitrary code execution.
- The memory corruption problem in the ASN.1 decoder has been resolved by deleting the vulnerable code.
- CVE-2021-30737: xerub
WebKit
- Processing maliciously crafted web content can lead to arbitrary code execution. Apple is aware of reports that this problem may have been actively exploited.
- Solved a memory corruption problem by improving state management.
- CVE-2021-30761: An anonymous researcher
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The third beta version of watchOS 7.6 and tvOS 14.7 is also coming. This time all beta versions have not added new features, it may just be performance improvements and bug fixes.
Apple released iOS 15 last week. Judging from the list of upgraded models officially announced by Apple, iOS 15 supports iPhone 6S and above models, as well as the first and second generations of iPhone SE, which has also won many old users. Unanimously like, but the upgrade is upgraded, and many functions of the new system are not experienced by old users.
Regarding the issue of iOS 15 supporting the upgrade of some old models, Apple said that they have put a lot of effort into adapting some old models to iOS 15. Although many experiences have been specially optimized, the hardware configuration is lagging behind. These models can’t experience the charm of the new iOS 15 system well, so those who have this need still need to replace them with new ones.
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