Use After Free in Google Chrome

CVE-2026-11165

Use after free in WebMIDI in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-11165?
CVE-2026-11165 is a critical-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 9.6/10. Published 2026-06-04.
How severe is CVE-2026-11165?
Critical severity. CVSS v3 base score is 9.6 out of 10.