Vulnerability · Published Aug 24, 2021 · Assigned by apple

CVE-2021-30853

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 6.9% (higher than 94% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS NVD)5.5Medium

Exploit odds (30 days)6.9%top 5.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack tooling1Public PoC

Official description

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.6. A malicious application may bypass Gatekeeper checks.

Affected products (as reported)

Vendor	Product	Versions
Apple	macOS	unspecified – before 11.6

References

https://support.apple.com/en-us/HT212804 x_refsource_MISC