What is CVE-2026-12012?

CVE-2026-12012 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.1/10. Published 2026-06-11.

How severe is CVE-2026-12012?

High severity. CVSS v3 base score is 8.1 out of 10.

Use After Free in Apple Macos

CVE-2026-12012

Use after free in Network in Google Chrome prior to 149.0.7827.115 allowed an attacker in a privileged network position to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)

Vulnerability class: Use-After-Free

EPSS: 0.002 (13.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apple Macos
Google Chrome — versions 149.0.7827.115
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-416 — Use After Free

References

chrome-cve-admin@google.com (Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-12012?: CVE-2026-12012 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.1/10. Published 2026-06-11.
How severe is CVE-2026-12012?: High severity. CVSS v3 base score is 8.1 out of 10.