Vulnerability · Published Mar 18, 2022 · Assigned by apple

CVE-2021-30771

High 7.8

In plain English

A high-severity security flaw in iOS and iPadOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 72% of all known vulnerabilities).

Severity (CVSS NVD)7.8High

Exploit odds (30 days)1.3%top 28.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, iOS 14.6 and iPadOS 14.6, watchOS 7.5, tvOS 14.6. Processing a maliciously crafted font file may lead to arbitrary code execution.

Affected products (as reported)

Vendor	Product	Versions
Apple	iOS and iPadOS	unspecified – before 14.6
Apple	macOS	unspecified – before 11.4
Apple	tvOS	unspecified – before 14.6
Apple	watchOS	unspecified – before 7.5

References

https://support.apple.com/en-us/HT212528 x_refsource_MISC
https://support.apple.com/en-us/HT212529 x_refsource_MISC
https://support.apple.com/en-us/HT212532 x_refsource_MISC
https://support.apple.com/en-us/HT212533 x_refsource_MISC