Vulnerability · Published Dec 8, 2020 · Assigned by apple

CVE-2020-27900

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 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS NVD)5.5Medium

Exploit odds (30 days)1.0%top 38.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An issue existed in the handling of snapshots. The issue was resolved with improved permissions logic. This issue is fixed in macOS Big Sur 11.0.1. A malicious application may be able to preview files it does not have access to.

Affected products (as reported)

Vendor	Product	Versions
Apple	macOS	unspecified – before 11.0

References

https://support.apple.com/en-us/HT211931 x_refsource_MISC
20201215 APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 11.0.1 mailing-list, x_refsource_FULLDISC