CVE-2026-11645: Google Chromium V8 Out-of-Bounds Read and Write Vulnerability — Fixed versions

Summary

Google Chromium V8 out-of-bounds read and write vulnerability that could allow a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Remediation

Inventory every Google Chromium V8 deployment, including staging.
Upgrade Google Chromium V8 to 149.0.7827.103.
Confirm the running version after the upgrade.
Review logs from before the change for signs of exploitation.

CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

Advisoryhttps://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html
Advisoryhttps://issues.chromium.org/issues/506689381
Advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-11645
Referencehttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-11645