Apple iOS, macOS, and other Apple products contain an unspecified vulnerability when processing maliciously crafted web content that may lead to arbitrary code execution.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
https://support.apple.com/en-us/121752, https://support.apple.com/en-us/121753, https://support.apple.com/en-us/121754, https://support.apple.com/en-us/121755, https://support.apple.com/en-us/121756