What is CVE-2026-14121?

CVE-2026-14121 is a critical-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 9.8/10. Published 2026-06-30.

How severe is CVE-2026-14121?

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

Use After Free in Google Chrome

CVE-2026-14121

Use after free in Chromoting in Google Chrome on Linux prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: Low)

Vulnerability class: Use-After-Free

EPSS: 0.003 (26.5th 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

Google Chrome — versions 150.0.7871.47
Linux Linux_kernel

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-14121?: CVE-2026-14121 is a critical-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 9.8/10. Published 2026-06-30.
How severe is CVE-2026-14121?: Critical severity. CVSS v3 base score is 9.8 out of 10.