What is CVE-2026-6299?

CVE-2026-6299 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.8/10. Published 2026-04-15.

How severe is CVE-2026-6299?

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

Use After Free in Apple Macos

CVE-2026-6299

Use after free in Prerender in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

Vulnerability class: Use-After-Free

EPSS: 0.001 (17.8th 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 147.0.7727.101
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-6299?: CVE-2026-6299 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.8/10. Published 2026-04-15.
How severe is CVE-2026-6299?: High severity. CVSS v3 base score is 8.8 out of 10.