What is CVE-2026-3920?

CVE-2026-3920 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2026-03-11.

How severe is CVE-2026-3920?

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

Out-of-bounds Read in Apple macOS

CVE-2026-3920

Out of bounds memory access in WebML in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

EPSS: 0.003 (21.4th 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
Google Chrome — versions 146.0.7680.71
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read
CWE-787 — Out-of-bounds Write

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-3920?: CVE-2026-3920 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2026-03-11.
How severe is CVE-2026-3920?: High severity. CVSS v3 base score is 8.8 out of 10.