What is CVE-2026-10921?

CVE-2026-10921 is a high-severity vulnerability in Apple Macos, classified under CWE-472. CVSS score: 8.3/10. Published 2026-06-04.

How severe is CVE-2026-10921?

High severity. CVSS v3 base score is 8.3 out of 10.

Integer overflow in Apple Macos

CVE-2026-10921

Integer overflow in Dawn in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Apple Macos
Google Chrome — versions 149.0.7827.53
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-472
CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2026-10921?: CVE-2026-10921 is a high-severity vulnerability in Apple Macos, classified under CWE-472. CVSS score: 8.3/10. Published 2026-06-04.
How severe is CVE-2026-10921?: High severity. CVSS v3 base score is 8.3 out of 10.