CVE-2026-78939: Use after free in Chromecast

Published May 14, 2026
·
Updated

Chromium: CVE-2026-78939 Use after free in Chromecast

Other sources

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Use after free in Chromecast in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

— NVD

Credit

Google

Affected Software

5 affected componentsFixes available
Google Google Chrome (Chromecast)<152.0.7977.65
Google Chrome<152.0.7977.64
152.0.7977.64
Google Chrome<152.0.7977.65
Microsoft Edge<152.0.4191.53
Microsoft Edge (Chromium-based)<152.0.4191.53
152.0.4191.53

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 152.0.7977.64
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 152.0.4191.53
  3. Upgrade

    Upgrade Chromium to a version that resolves this vulnerability.

    Fixed in 152.0.7977.65
  4. Upgrade

    Upgrade Google Chrome (Chromium-based) to a version that resolves this vulnerability.

    Fixed in 152.0.7977.65

Event History

May 14, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Aug 25, 2026
CVE Published
via MITRE·08:09 PM
Data Sourced
via MITRE·08:09 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Aug 28, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which versions are affected?

Google Chrome versions earlier than 152.0.7977.65 are affected. The listed software scope includes Google Chrome and its Chromecast component.

2

What access or precondition does an attacker need?

The attacker must first compromise the renderer process. A crafted HTML page is then used to trigger arbitrary code execution outside the sandbox.

3

How can I determine whether a system is exposed?

Check the installed Google Chrome version. Systems running a version earlier than 152.0.7977.65 should be treated as affected.

Company

Resources

Contact

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