PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-12011 Google CVE debrief

CVE-2026-12011 is a high-severity vulnerability in Google Chrome on Windows, allowing a remote attacker to potentially perform a sandbox escape via a crafted HTML page. The vulnerability is caused by a use-after-free issue in WebMIDI. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code in the context of the browser.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-12
Advisory published
2026-06-11
Advisory updated
2026-06-12

Who should care

Users of Google Chrome on Windows, particularly those who browse the web and may encounter crafted HTML pages.

Technical summary

The vulnerability is caused by a use-after-free issue in WebMIDI, which allows a remote attacker who has compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. The CVSS score for this vulnerability is 8.3, indicating a high severity.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.115 or later.
  • Use a web browser that is not vulnerable to this issue.
  • Be cautious when clicking on links or visiting websites from unknown sources.

Evidence notes

The CVE record and NVD detail can be found at [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-12011) and [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-12011), respectively. Additional information can be found in the vendor advisory at [ref-4](https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12011 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12011

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-12011 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12011

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.