CVE-2021-30738

Description

A malicious application may be able to overwrite arbitrary files. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Mojave. An issue with path validation logic for hardlinks was addressed with improved path sanitization.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.06%

Vendor Advisory apple.com Vendor Advisory apple.com

Affected: Apple macOS

References

Link	Tags
https://support.apple.com/en-us/HT212529	vendor advisory
https://support.apple.com/en-us/HT212531	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-30738?: CVE-2021-30738 has been scored as a medium severity vulnerability.
How to fix CVE-2021-30738?: To fix CVE-2021-30738, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30738 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-30738 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30738?: CVE-2021-30738 affects Apple macOS, Apple macOS.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.