PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-10921 Google CVE debrief

CVE-2026-10921 is an integer overflow vulnerability in Dawn in Google Chrome prior to 149.0.7827.53. A remote attacker who had compromised the renderer process could potentially perform a sandbox escape via a crafted HTML page. The vulnerability has a CVSS score of 8.3 and is classified as High severity.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-06-05
Advisory published
2026-06-04
Advisory updated
2026-06-05

Who should care

Users of Google Chrome prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability is caused by an integer overflow in the Dawn component of Google Chrome. This could allow a remote attacker who has compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The vulnerability was reported by [email protected] and is referenced in the Chromium security severity as High.

Official resources

CVE-2026-10921 was published on 2026-06-04T23:16:54.390Z and modified on 2026-06-05T15:47:34.220Z.