CVE-2026-12011: Use after free in Google Chrome
Use after free in WebMIDI in Google Chrome on Windows prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the WebMIDI implementation of Google Chrome on Windows platforms before version 149.0.7827.115. Exploitation requires prior compromise of the renderer process and could lead to sandbox escape, increasing the attacker's privileges beyond the renderer sandbox. The issue is addressed in Chrome version 149.0.7827.115.
Potential Impact
Successful exploitation allows an attacker who has compromised the renderer process to potentially escape the sandbox, which could lead to execution of code with higher privileges on the host system. This elevates the risk of further system compromise beyond the browser sandbox.
Mitigation Recommendations
Users should update Google Chrome on Windows to version 149.0.7827.115 or later, where this vulnerability is fixed. No other mitigation steps are indicated by the vendor advisory.
CVE-2026-12011: Use after free in Google Chrome
Description
Use after free in WebMIDI in Google Chrome on Windows prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
CVSS v3.1
Score 8.3high
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the WebMIDI implementation of Google Chrome on Windows platforms before version 149.0.7827.115. Exploitation requires prior compromise of the renderer process and could lead to sandbox escape, increasing the attacker's privileges beyond the renderer sandbox. The issue is addressed in Chrome version 149.0.7827.115.
Potential Impact
Successful exploitation allows an attacker who has compromised the renderer process to potentially escape the sandbox, which could lead to execution of code with higher privileges on the host system. This elevates the risk of further system compromise beyond the browser sandbox.
Mitigation Recommendations
Users should update Google Chrome on Windows to version 149.0.7827.115 or later, where this vulnerability is fixed. No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-06-11T18:16:03.416Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html","vendor":"Google"}]
Threat ID: 6a2b290f815e7002b83416ee
Added to database: 6/11/2026, 9:30:55 PM
Last enriched: 6/11/2026, 10:00:14 PM
Last updated: 6/12/2026, 3:58:24 AM
Views: 5
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