What is CVE-2026-12449?

CVE-2026-12449 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 7.8/10. Published 2026-06-17.

How severe is CVE-2026-12449?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Google Chrome

CVE-2026-12449

Use after free in Chromoting in Google Chrome on Windows prior to 149.0.7827.155 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: High)

Vulnerability class: Use-After-Free

EPSS: 0.001 (1.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Google Chrome — versions 149.0.7827.155
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)

Frequently asked questions

What is CVE-2026-12449?: CVE-2026-12449 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 7.8/10. Published 2026-06-17.
How severe is CVE-2026-12449?: High severity. CVSS v3 base score is 7.8 out of 10.