What is CVE-2026-9909?

CVE-2026-9909 is a high-severity vulnerability in Apple macOS, classified under CWE-472. CVSS score: 7.5/10. Published 2026-05-28.

How severe is CVE-2026-9909?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apple macOS

CVE-2026-9909

Integer overflow in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Published 2026-05-28 · last modified 2026-07-21.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-472

References

chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304… (Release Notes)
issues.chromium.org/issues/499152771 (Permissions Required)

Frequently asked questions

What is CVE-2026-9909?: CVE-2026-9909 is a high-severity vulnerability in Apple macOS, classified under CWE-472. CVSS score: 7.5/10. Published 2026-05-28.
How severe is CVE-2026-9909?: High severity. CVSS v3 base score is 7.5 out of 10.