What is CVE-2026-11665?

CVE-2026-11665 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2026-06-09.

How severe is CVE-2026-11665?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Out-of-bounds Read in Google Chrome

CVE-2026-11665

Out of bounds read in Dawn in Google Chrome on Windows prior to 149.0.7827.103 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

Published 2026-06-09 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (11.1th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Google Chrome — versions 149.0.7827.103
Microsoft Windows

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/513948465 (Permissions Required)

Frequently asked questions

What is CVE-2026-11665?: CVE-2026-11665 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2026-06-09.
How severe is CVE-2026-11665?: Medium severity. CVSS v3 base score is 4.3 out of 10.