CVE:CVE-2021-30748
CNNVD:CNNVD-202107-1629
Apple macOS Big Sur是美国苹果（Apple）公司的一个手机应用APP。
Apple macOS Big Sur 11.5存在缓冲区错误漏洞，该漏洞源于AVEVideoEncoder子系统中的边界错误。本地攻击者可以运行一个专门设计的程序来触发内存损坏，并执行任意代码。
solution:Upgrade apple ipados to a higher version than 14.7,and avoid the version (,14.7); Upgrade apple iphone_os to a higher version than 14.7,and avoid the version (,14.7); Upgrade apple macos to a higher version than 11.5,and avoid the version (,11.5); Upgrade apple tvos to a higher version than 14.7,and avoid the version (,14.7)