CVE-2026-12011: Use After Free

Published May 30, 2026
·
Updated

Chromium: CVE-2026-12011 Use after free  WebMIDI

Other sources

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

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)

— NVD

Credit

Google

Affected Software

6 affected componentsFixes available
Google Google Chrome for Windows<149.0.7827.115
Microsoft Edge<149.0.4022.69
Google Chrome<149.0.7827.114
149.0.7827.114
All of the following
Google Chrome<149.0.7827.115
Microsoft Windows
Microsoft Edge (Chromium-based)<149.0.4022.69
149.0.4022.69

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 149.0.7827.114
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 149.0.4022.69
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 149.0.7827.115

Event History

May 30, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jun 11, 2026
CVE Published
via MITRE·08:48 PM
Data Sourced
via MITRE·08:48 PM
DescriptionWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software
Jun 15, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-12011?

CVE-2026-12011 has a severity rating of High with a CVSS score of 8.3.

2

How do I fix CVE-2026-12011?

To fix CVE-2026-12011, update Google Chrome to version 149.0.7827.115 or later.

3

What type of vulnerability is CVE-2026-12011?

CVE-2026-12011 is categorized as a Use After Free vulnerability.

4

What can attackers do with CVE-2026-12011?

Attackers can potentially perform a sandbox escape on the renderer process through a crafted HTML page.

5

Which software is affected by CVE-2026-12011?

CVE-2026-12011 affects Google Chrome for Windows prior to version 149.0.7827.115.

Company

Resources

Contact

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