Is CVE-2026-12440 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-12440 being exploited in the wild.

How severe is CVE-2026-12440?

Critical severity, with a CVSS score of 9.6, published 17 June 2026.

Which products and versions are affected?

Google Chrome Prior to 149.0.7827.155.

Is there a fix for CVE-2026-12440?

A patch was published on 2026-06-16: Stable channel update released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-12440 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-12440?

Check whether you run Google Chrome at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-12440: Google Chrome use after free in DigitalCredentials

CVE-2026-12440 · Severity: critical · CVSS 9.6 · Published 2026-06-17

A critical security vulnerability has been identified in Google Chrome's Digital Credentials component on Windows. This flaw could allow a malicious website to break out of the browser's security sandbox, which is designed to keep web content isolated from the rest of the computer. If exploited, an attacker could potentially gain unauthorized access to the underlying operating system, compromising user data and system integrity.

Technologies: Google Chrome. Vendors: Google.

Quick answers

Is CVE-2026-12440 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-12440 being exploited in the wild.
How severe is CVE-2026-12440?: Critical severity, with a CVSS score of 9.6, published 17 June 2026.
Which products and versions are affected?: Google Chrome Prior to 149.0.7827.155.
Is there a fix for CVE-2026-12440?: A patch was published on 2026-06-16: Stable channel update released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-12440 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-12440?: Check whether you run Google Chrome at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A use-after-free (UAF) vulnerability exists in the DigitalCredentials component of Google Chrome for Windows. The flaw is triggered when the browser incorrectly manages memory during the handling of digital credentials, allowing a remote attacker to execute arbitrary code. By enticing a user to visit a specially crafted HTML page, an attacker can exploit this memory corruption to escape the Chromium sandbox and execute commands with the privileges of the logged-in user. This vulnerability is addressed in Chrome version 149.0.7827.155.

Affected products

Google Chrome Prior to 149.0.7827.155

Timeline

2026-06-03: other: Reported to Google
2026-06-16: patched: Stable channel update released
2026-06-17: disclosed: Public advisory published

References

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