Out-of-bounds Read in Apple macOS

CVE-2020-9918

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

Vulnerability class: Buffer Overflow

EPSS: 0.030 (86.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-9918?
CVE-2020-9918 is a critical-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2020-10-16.
How severe is CVE-2020-9918?
Critical severity. CVSS v3 base score is 9.8 out of 10.