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CVE-2026-11103 Google CVE debrief

A local attacker can exploit CVE-2026-11103, a Medium-severity privilege escalation vulnerability in Google Chrome's Installer on Windows, by creating a malicious file. This issue was addressed in Chrome version 149.0.7827.53.

Vendor
Google
Product
Chrome
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-06-08
Advisory published
2026-06-04
Advisory updated
2026-06-08

Who should care

Users of Google Chrome on Windows, particularly those concerned with local privilege escalation vulnerabilities.

Technical summary

The vulnerability, CVE-2026-11103, is caused by inappropriate implementation in the Installer component of Google Chrome on Windows. This issue allows a local attacker to perform OS-level privilege escalation by creating a malicious file. The CVSS score for this vulnerability is 7.8, indicating a High severity level.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later to mitigate this vulnerability.
  • Ensure that all users of Google Chrome on Windows are aware of the risks associated with local privilege escalation attacks.

Evidence notes

This vulnerability was reported through the Chromium security bug reporting process and was addressed in the stable channel update for desktop.

Official resources

CVE-2026-11103 was published on 2026-06-04T23:17:15.860Z and modified on 2026-06-08T14:45:42.153Z.