What is CVE-2021-30805?

CVE-2021-30805 is a critical-severity vulnerability in Apple Macos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-09-08.

How severe is CVE-2021-30805?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Apple Macos

CVE-2021-30805

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. An application may be able to execute arbitrary code wit…

Vulnerability class: Buffer Overflow

EPSS: 0.031 (86.5th 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

Apple Macos — versions unspecified
Apple Mac_os_x — versions 10.14.6, 10.15.6, 10.15.7
Apple Security Update - Catalina — versions unspecified

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2021-30805?: CVE-2021-30805 is a critical-severity vulnerability in Apple Macos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-09-08.
How severe is CVE-2021-30805?: Critical severity. CVSS v3 base score is 9.8 out of 10.