CVE-2026-14408 Overview
CVE-2026-14408 is an uninitialized memory use vulnerability in Dawn, the WebGPU implementation used by Google Chrome. The flaw affects Chrome versions prior to 150.0.7871.46 and allows a remote attacker to read potentially sensitive information from process memory. Exploitation requires the victim to visit a crafted HTML page that triggers the vulnerable code path in Dawn. The issue is tracked under CWE-457: Use of Uninitialized Variable and Chromium classifies its security severity as Medium.
Critical Impact
A remote attacker can leak sensitive process memory contents from the Chrome renderer through a crafted web page, potentially exposing pointers, credentials, or other data useful for follow-on exploitation.
Affected Products
- Google Chrome versions prior to 150.0.7871.46
- Chromium-based browsers embedding vulnerable Dawn WebGPU components
- Downstream Chromium forks that had not yet integrated the Dawn fix
Discovery Timeline
- 2026-07-01 - CVE-2026-14408 published to the National Vulnerability Database
- 2026-07-02 - Last updated in NVD database
Technical Details for CVE-2026-14408
Vulnerability Analysis
The vulnerability resides in Dawn, the cross-platform WebGPU implementation shipped with Chrome. Dawn translates WebGPU API calls from web content into native graphics API commands for Vulkan, Metal, D3D12, and OpenGL. An uninitialized variable in this pipeline causes memory that was never explicitly set to be consumed as if it contained valid data.
Attack complexity is low and no privileges are required, but user interaction is needed because the victim must load an attacker-controlled page. The impact is confined to confidentiality, since the issue leaks memory contents rather than enabling code execution or corruption of process state.
The EPSS score of 0.198% reflects a low probability of exploitation attempts in the near term, and no public proof-of-concept or in-the-wild exploitation has been reported.
Root Cause
The root cause is a failure to initialize a variable or buffer before its value is read within Dawn. When WebGPU commands issued from JavaScript flow through the affected code path, the uninitialized region is returned to the caller or embedded in downstream graphics operations. The residual bytes reflect prior contents of the renderer process heap or stack, which may include sensitive data from other origins or browser subsystems.
Attack Vector
Exploitation is network-based and requires user interaction. An attacker hosts a crafted HTML page that invokes WebGPU APIs to reach the vulnerable Dawn code path. Once the victim visits the page, JavaScript reads back memory content that was never properly initialized. Repeated invocations can be used to spray and harvest memory across multiple calls. Additional technical context is available in the Chromium Issue Tracker Entry and the Google Chrome Stable Update advisory.
Detection Methods for CVE-2026-14408
Indicators of Compromise
- Browser telemetry showing Chrome versions older than 150.0.7871.46 in the environment after the patch release.
- Web traffic to unfamiliar domains hosting WebGPU-heavy content that invokes Dawn shader compilation or buffer readbacks.
- Renderer process crash dumps referencing Dawn modules during WebGPU operations.
Detection Strategies
- Inventory installed Chrome versions across managed endpoints and flag any build below 150.0.7871.46.
- Correlate browser process telemetry with outbound connections to newly registered or low-reputation domains serving WebGPU content.
- Monitor for unusual patterns of GPU process memory allocations tied to specific tabs or origins.
Monitoring Recommendations
- Ingest browser update status into the security data lake and alert on stale Chrome installs.
- Track script activity that repeatedly instantiates WebGPU adapters, devices, and buffer reads from a single origin.
- Watch for anomalous renderer or GPU process behavior during navigation to untrusted sites.
How to Mitigate CVE-2026-14408
Immediate Actions Required
- Update Google Chrome to version 150.0.7871.46 or later on all managed endpoints.
- Force-restart browser sessions after deployment so the patched binary is loaded.
- Verify that Chromium-based browsers and embedded WebViews in the environment have integrated the Dawn fix.
Patch Information
Google addressed the issue in the Chrome Stable channel update referenced in the Google Chrome Stable Update advisory. Upgrading to Chrome 150.0.7871.46 or later remediates CVE-2026-14408. Enterprise administrators should confirm the update through the Chrome management console or endpoint management tooling.
Workarounds
- Disable WebGPU using the --disable-features=WebGPU command-line switch or enterprise policy where the feature is not required.
- Restrict browsing to trusted sites through URL allowlists until patching completes.
- Isolate high-risk users with site isolation and strict origin policies to reduce cross-origin data exposure.
# Configuration example: enforce minimum Chrome version via enterprise policy
# Windows: HKLM\SOFTWARE\Policies\Google\Chrome
# Set MinimumBrowserVersion to 150.0.7871.46
# Optional: disable WebGPU until patch is fully deployed
chrome.exe --disable-features=WebGPU
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
