CVE-2026-13951: Google Chrome RCE Vulnerability

CVE-2026-13951 Overview

CVE-2026-13951 is a sandbox escape vulnerability in the USB component of Google Chrome. The flaw stems from insufficient policy enforcement [CWE-693] in Chrome versions prior to 150.0.7871.47. A remote attacker who has already compromised the renderer process can leverage a crafted HTML page to escape the Chrome sandbox. Successful exploitation grants the attacker access to resources outside the renderer's restricted execution context, effectively defeating a core Chrome security boundary.

Critical Impact
Attackers who compromise the Chrome renderer can escape the sandbox and gain broader access to the underlying system through the USB subsystem.

Affected Products

Google Chrome desktop versions prior to 150.0.7871.47
Chromium-based browsers sharing the affected USB policy enforcement code
Windows, macOS, and Linux Chrome Stable channel builds preceding the fix

Discovery Timeline

2026-06-30 - CVE-2026-13951 published to NVD
2026-07-02 - Last updated in NVD database

Technical Details for CVE-2026-13951

Vulnerability Analysis

The vulnerability resides in Chrome's USB subsystem, which brokers device access between the sandboxed renderer process and the privileged browser process. Chrome's multi-process architecture confines untrusted web content to renderer processes with restricted operating system privileges. Policy checks in the USB code path fail to adequately restrict operations initiated from a compromised renderer. An attacker chaining this flaw with a prior renderer compromise can pivot from the sandbox to higher privilege contexts. The issue is classified under [CWE-693] Protection Mechanism Failure and requires user interaction on a crafted HTML page.

Root Cause

The root cause is inadequate enforcement of security policies governing USB-related IPC messages between the renderer and browser processes. The USB implementation trusts inputs or operations that should have been rejected under Chrome's site isolation and sandbox threat model. Because the check gap exists at the trust boundary, code executing inside the renderer can invoke privileged behavior it should not reach.

Attack Vector

Exploitation requires a two-stage chain. The attacker first compromises the renderer using a separate memory corruption or logic bug, then abuses the USB policy flaw to escape the sandbox. Delivery occurs over the network through a crafted HTML page, and the victim must interact with the malicious content. See the Chromium Issue Tracker Entry for tracking details.

No public proof-of-concept exploit is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS probability is 0.26%.

Detection Methods for CVE-2026-13951

Indicators of Compromise

Chrome renderer processes spawning unexpected child processes or accessing USB device handles outside normal browsing workflows
Unusual chrome.exe process trees showing privilege transitions following visits to untrusted web content
Browser crash reports referencing the USB service or device::UsbService components correlated with suspicious network activity

Detection Strategies

Monitor Chrome version telemetry across the fleet and flag endpoints running builds earlier than 150.0.7871.47
Correlate browser process anomalies with outbound connections to newly registered or low-reputation domains hosting HTML payloads
Apply behavioral analytics to identify sandbox escape patterns such as renderer processes writing to non-sandboxed paths

Monitoring Recommendations

Enable Chrome Enterprise reporting to surface version drift and crash telemetry from managed endpoints
Ingest endpoint process telemetry into a SIEM or data lake for correlation across browser and system events
Alert on Chrome child processes that deviate from the standard renderer, GPU, utility, and network service tree

How to Mitigate CVE-2026-13951

Immediate Actions Required

Update Google Chrome to version 150.0.7871.47 or later on all managed endpoints
Force a browser restart after the update to ensure the patched binaries load into memory
Audit Chromium-based browsers such as Edge, Brave, and Opera for downstream patch availability and apply updates

Patch Information

Google released the fix in Chrome Stable 150.0.7871.47 through the desktop stable channel update. Administrators should review the Google Chrome Desktop Update advisory and confirm deployment via chrome://settings/help or enterprise management tooling. Chrome typically auto-updates, but managed environments with pinned versions require manual rollout.

Workarounds

Restrict access to the WebUSB API through Chrome Enterprise policy DefaultWebUsbGuardSetting set to block
Enforce browsing restrictions or isolation for high-risk users until patches are deployed
Disable USB device access from web content on endpoints where WebUSB functionality is not required

bash

# Chrome Enterprise policy example to block WebUSB access
# Windows registry path
# HKLM\Software\Policies\Google\Chrome\DefaultWebUsbGuardSetting = 2

# macOS/Linux managed policy JSON
{
  "DefaultWebUsbGuardSetting": 2,
  "WebUsbBlockedForUrls": ["*"]
}