Vulnerability · Published Sep 8, 2021 · Assigned by apple

CVE-2021-30791

Medium 5.5

In plain English

A medium-severity security flaw in iOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).

Severity (CVSS NVD)5.5Medium

Exploit odds (30 days)1.1%top 33.8% 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 iOS 14.7, macOS Big Sur 11.5. Processing a maliciously crafted file may disclose user information.

Affected products (as reported)

Vendor	Product	Versions
Apple	iOS	unspecified – before 14.7
Apple	macOS	unspecified – before 11.5

References

https://support.apple.com/kb/HT212603 x_refsource_CONFIRM
https://support.apple.com/kb/HT212600 x_refsource_CONFIRM
https://support.apple.com/en-us/HT212601 x_refsource_MISC
https://support.apple.com/en-us/HT212602 x_refsource_MISC