What is CVE-2021-1876?

CVE-2021-1876 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 8.8/10. Published 2021-09-08.

How severe is CVE-2021-1876?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Apple macOS

CVE-2021-1876

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.

Vulnerability class: Use-After-Free

EPSS: 0.013 (66.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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

Weakness classification (CWE)

CWE-416 — Use After Free

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-2021-1876?: CVE-2021-1876 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 8.8/10. Published 2021-09-08.
How severe is CVE-2021-1876?: High severity. CVSS v3 base score is 8.8 out of 10.