What is CVE-2020-9855?

CVE-2020-9855 is a high-severity vulnerability in Apple macOS, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-06-09.

How severe is CVE-2020-9855?

High severity. CVSS v3 base score is 7.8 out of 10.

Improper input validation in Apple macOS

CVE-2020-9855

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (19.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apple Macos — versions unspecified
Apple Mac_os_x

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2020-9855?: CVE-2020-9855 is a high-severity vulnerability in Apple macOS, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-06-09.
How severe is CVE-2020-9855?: High severity. CVSS v3 base score is 7.8 out of 10.