Vulnerability · Published Aug 24, 2021 · Assigned by apple

CVE-2021-31013

Medium 5.5

In plain English

A medium-severity security flaw in macOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS NVD)5.5Medium

Exploit odds (30 days)0.8%top 43.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, iOS 15.2 and iPadOS 15.2, macOS Big Sur 11.6.2. Processing a maliciously crafted font may result in the disclosure of process memory.

Affected products (as reported)

Vendor	Product	Versions
Apple	macOS	unspecified – before 12.1
Apple	macOS	unspecified – before 11.6
Apple	macOS	unspecified – before 15.2

References

https://support.apple.com/en-us/HT212976 x_refsource_MISC
https://support.apple.com/en-us/HT212978 x_refsource_MISC
https://support.apple.com/en-us/HT212979 x_refsource_MISC