Privilege escalation in Google Chrome
CVE-2026-12018
Inappropriate implementation in Mojo in Google Chrome on Windows prior to 149.0.7827.115 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: High)
Vulnerability class: Privilege Escalation
EPSS: 0.002 (5.6th 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
- Google Chrome — versions 149.0.7827.115
- Microsoft Windows
Weakness classification (CWE)
References
- chrome-cve-admin@google.com (Vendor Advisory)
- chrome-cve-admin@google.com (Permissions Required, Issue Tracking)
Frequently asked questions
- What is CVE-2026-12018?
- CVE-2026-12018 is a high-severity vulnerability in Google Chrome, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-06-11.
- How severe is CVE-2026-12018?
- High severity. CVSS v3 base score is 8.8 out of 10.