What is CVE-2026-9907?

CVE-2026-9907 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2026-05-28.

How severe is CVE-2026-9907?

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

Out-of-bounds Read in Google Chrome

CVE-2026-9907

Out of bounds read in Dawn in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

EPSS: 0.000 (9.5th percentile) — read the EPSS interpretation.

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.

Affected products

Google Chrome — versions 148.0.7778.216
Microsoft Windows

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

chrome-cve-admin@google.com (Release Notes)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-9907?: CVE-2026-9907 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2026-05-28.
How severe is CVE-2026-9907?: Medium severity. CVSS v3 base score is 4.3 out of 10.