What is CVE-2026-11103?

CVE-2026-11103 is a high-severity vulnerability in Google Chrome, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2026-06-04.

How severe is CVE-2026-11103?

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

Privilege escalation in Google Chrome

CVE-2026-11103

Inappropriate implementation in Installer in Google Chrome on Windows prior to 149.0.7827.53 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)

Vulnerability class: Privilege Escalation

EPSS: 0.001 (0.2th 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 149.0.7827.53
Microsoft Windows

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

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

Frequently asked questions

What is CVE-2026-11103?: CVE-2026-11103 is a high-severity vulnerability in Google Chrome, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2026-06-04.
How severe is CVE-2026-11103?: High severity. CVSS v3 base score is 7.8 out of 10.