CVE-2026-12469 Overview
CVE-2026-12469 is an uninitialized memory use vulnerability in the GPU component of Google Chrome on Android. The flaw affects Chrome versions prior to 149.0.7827.155 and is classified under [CWE-457]. A remote attacker can leak cross-origin data by serving a crafted HTML page to a targeted user. Chromium tracks this issue with a security severity rating of High, while the National Vulnerability Database scores the CVSS at 4.3. The vulnerability requires user interaction, as the victim must visit a malicious or compromised web page rendered by the affected browser.
Critical Impact
A remote attacker can read cross-origin data from the GPU process through a crafted HTML page, breaking the Same-Origin Policy enforced by the browser.
Affected Products
- Google Chrome on Android prior to version 149.0.7827.155
- Google Android devices running vulnerable Chrome builds
- Chromium-based browser components sharing the affected GPU code path
Discovery Timeline
- 2026-06-17 - CVE-2026-12469 published to NVD
- 2026-06-18 - Last updated in NVD database
Technical Details for CVE-2026-12469
Vulnerability Analysis
The vulnerability stems from the GPU process reading memory that was never initialized before use. When Chrome renders graphics content driven by a malicious HTML page, the uninitialized region can contain residual data from prior allocations. That residual data may include bytes belonging to other origins rendered in the same browser session. The attacker observes the leaked bytes through rendering side effects or readback APIs exposed to web content. Because the leak originates inside the GPU process, the Same-Origin Policy enforced at the renderer level does not contain the disclosure.
The issue is tracked publicly in the Chromium Issue Tracker Entry and addressed in the Google Chrome Stable Update. The EPSS probability for in-the-wild exploitation is currently low, and no public proof-of-concept has been released.
Root Cause
The defect is an instance of [CWE-457] Use of Uninitialized Variable inside GPU rendering code. A buffer, texture, or memory region is allocated and then read without first being cleared or written to a deterministic value. The contents of that region depend on whatever previous allocation occupied the same physical memory.
Attack Vector
The attack vector is network-based and requires user interaction. An attacker hosts a crafted HTML page that triggers the vulnerable GPU code path. The victim visits the page using a vulnerable Chrome on Android build. The page reads back the rendered output and exfiltrates the leaked cross-origin bytes to an attacker-controlled server. No authentication or elevated privileges are required.
No verified exploit code has been published. Technical specifics are described in the linked Chromium issue tracker entry once the embargo is lifted.
Detection Methods for CVE-2026-12469
Indicators of Compromise
- Mobile Chrome clients reporting build versions earlier than 149.0.7827.155 in user-agent telemetry
- Outbound HTTPS connections from mobile devices to newly registered domains hosting graphics-heavy HTML payloads
- Unusual WebGL, WebGPU, or Canvas readback activity in browser telemetry from untrusted origins
Detection Strategies
- Inventory Chrome version data from mobile device management (MDM) platforms and flag Android endpoints below the patched build.
- Correlate web proxy logs against known-malicious domains and threat intelligence feeds covering Chrome exploit delivery infrastructure.
- Inspect DNS and TLS Server Name Indication (SNI) records for repeated requests to single-page hosts that serve only GPU-intensive content.
Monitoring Recommendations
- Forward mobile browser telemetry and proxy logs into a centralized data lake for version compliance reporting.
- Alert when Android endpoints continue reporting unpatched Chrome builds beyond the organization's patch window.
- Track outbound traffic volume from mobile browsers to detect anomalous data egress that could indicate cross-origin leakage.
How to Mitigate CVE-2026-12469
Immediate Actions Required
- Update Google Chrome on Android to version 149.0.7827.155 or later through the Google Play Store.
- Push an MDM compliance policy requiring the patched Chrome build on managed Android devices.
- Restrict access to high-value web applications from Android endpoints that have not confirmed the update.
Patch Information
Google released the fix in the stable channel update documented at the Google Chrome Stable Update. Users should install Chrome 149.0.7827.155 or later. Android devices receive the update through the Google Play Store, and enterprise fleets should validate deployment via MDM reporting.
Workarounds
- Disable hardware acceleration in Chrome on Android where the configuration allows, reducing exposure of the affected GPU code path.
- Block access to untrusted web content from corporate Android devices using a secure web gateway until patching completes.
- Use an alternate, fully patched browser for sensitive workflows on Android until Chrome 149.0.7827.155 is deployed.
# Verify installed Chrome version on a managed Android device via ADB
adb shell dumpsys package com.android.chrome | grep versionName
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
