CVE-2026-12018

chromium-browser: chromium-browser: Inappropriate implementation Mojo

Published Jun 11, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
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)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6344-1 chromium security update
History
Type Values Removed Values Added
Title Local Privilege Escalation via Mojo in Google Chrome on Windows chromium-browser: chromium-browser: Inappropriate implementation Mojo
Weaknesses CWE-648
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft windows
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows
Type Values Removed Values Added
Title Local Privilege Escalation via Mojo in Google Chrome on Windows
Type Values Removed Values Added
Title OS‑Level Privilege Escalation via Improper Mojo Handling in Chrome Windows
Weaknesses CWE-285
CWE-732
Type Values Removed Values Added
Weaknesses CWE-269
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title OS‑Level Privilege Escalation via Improper Mojo Handling in Chrome Windows
Weaknesses CWE-285
CWE-732
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Description 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)
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Jun 12, 2026, 3:56 AM
Reserved
Jun 11, 2026, 6:16 PM
Status
Analyzed
Published
Jun 11, 2026, 10:16 PM
Modified
Oct 25, 2026, 11:10 PM
Severity
Important
Public date
Jun 11, 2026, 8:48 PM