What is CVE-2021-30738?

CVE-2021-30738 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.5/10. Published 2021-09-08.

How severe is CVE-2021-30738?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Apple macOS

CVE-2021-30738

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.

EPSS: 0.003 (22.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Apple Macos — versions unspecified
Apple Mac_os_x — versions 10.14.6

References

product-security@apple.com (x_refsource_MISC, Vendor Advisory)
product-security@apple.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-30738?: CVE-2021-30738 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.5/10. Published 2021-09-08.
How severe is CVE-2021-30738?: Medium severity. CVSS v3 base score is 5.5 out of 10.