Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (google).
CVSS VectorVendor: google
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Chromoting in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: Critical)
AnalysisAI
Remote code execution in Google Chrome versions prior to 149.0.7827.53 stems from a use-after-free flaw in the Chromoting (Chrome Remote Desktop) component, which Google rated Critical internally. A remote attacker can deliver malicious network traffic to a user with an active Chromoting session and execute arbitrary code in the browser context, though user interaction is required per the CVSS vector. No public exploit identified at time of analysis, and EPSS probability is very low (0.04%).
Technical ContextAI
The flaw resides in Chromoting, the Chrome subsystem that powers Chrome Remote Desktop and uses the WebRTC/protobuf-based protocol for screen sharing and input forwarding between hosts and clients. CWE-416 (Use After Free) means the code dereferences a heap object after it has been freed, typically because a network event handler retains a stale pointer to a session, channel, or buffer object whose lifetime is tied to a separate connection state machine. In Chromoting specifically, this class of bug is commonly triggered by out-of-order or malformed protocol messages that race object teardown, and successful exploitation typically yields arbitrary read/write in the renderer or utility process hosting the Chromoting client, which can then be chained with a sandbox escape for full RCE.
RemediationAI
Vendor-released patch: Google Chrome 149.0.7827.53 - update via Chrome's built-in updater (chrome://settings/help) and restart the browser to apply, per the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html and the upstream tracker at https://issues.chromium.org/issues/513231432. For managed fleets, push the update through enterprise management (Chrome Browser Cloud Management, GPO, or MDM) and verify the version on endpoints. As an interim compensating control where patching is delayed, disable or uninstall the Chrome Remote Desktop host/extension and block outbound traffic to Chromoting relay endpoints (remotedesktop.google.com) at the network egress; trade-off is loss of legitimate remote-support workflows. Users of Chromium-based browsers (Edge, Brave, Opera, Vivaldi) should apply their respective vendor updates as they ship the merged fix.
Same weakness CWE-416 – Use After Free
View allVendor StatusVendor
SUSE
Severity: High| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
Share
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-34342
GHSA-gwmp-chcm-8m6p