Google Chromium V8 Out-of-Bounds Read and Write Vulnerability
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.
Quick answer
Google Chromium V8 should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- -
Fixed versions
- Apply the latest vendor-supported patched version.
How to fix it
Chromium V8 is affected by an out-of-bounds read and write vulnerability that can be triggered through crafted web content. Update Chrome and all Chromium-based browsers to the fixed stable release, then force browser restarts across managed devices. Prioritize endpoints used by administrators and users who access sensitive web applications.
- Inventory Google Chrome, Microsoft Edge, Opera, Electron apps, and other Chromium-based browsers in the environment.
- Update affected browsers to the fixed stable channel release that includes the CVE-2026-11645 V8 fix.
- Force browser restarts so the patched V8 engine is actually loaded by users.
- Update managed browser baselines, kiosk images, VDI pools, and golden images that include Chromium components.
- Restrict high-risk browsing from privileged admin workstations until patch compliance is complete.
- Review proxy, EDR, and browser telemetry for suspicious renderer crashes, exploit-kit pages, or unexpected child processes.
- Rebuild or update Electron-based desktop applications if they bundle an affected Chromium runtime.
Scan now. Google sign-in is only needed to unlock fix guidance.
Verify the fix
- Confirm managed endpoints report the fixed Chrome or Chromium-based browser version.
- Verify browser restart status and confirm old processes are no longer running.
- Review EDR and crash telemetry for V8 exploitation indicators during the vulnerable window.
- Test critical web applications after browser updates.
- Run a Fixnx scan against public web properties after browser-side remediation and documentation are complete.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-11645?
Google Chromium V8 versions listed as affected should be reviewed: -.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
Why can this risk appear in multiple categories?
A vulnerability can belong to more than one platform or ecosystem. Fixnx keeps one canonical risk page while also listing it in every relevant category.