CVE-2025-8901: Google Chrome ANGLE RCE Vulnerability

CVE-2025-8901 Overview

CVE-2025-8901 is an out-of-bounds write vulnerability in the ANGLE (Almost Native Graphics Layer Engine) component of Google Chrome. This memory corruption flaw allows a remote attacker to perform out-of-bounds memory access via a crafted HTML page, potentially leading to arbitrary code execution or system compromise. ANGLE serves as a critical graphics abstraction layer that translates OpenGL ES API calls to various native graphics APIs, making this vulnerability particularly concerning as it affects the browser's core rendering capabilities.

Critical Impact

A remote attacker can exploit this out-of-bounds write vulnerability by enticing a user to visit a malicious webpage, potentially achieving arbitrary code execution within the browser's context and compromising user data or system integrity.

Affected Products

• Google Chrome prior to version 139.0.7258.127
• Google Chrome on Microsoft Windows
• Google Chrome on Apple macOS
• Google Chrome on Linux

Discovery Timeline

• August 13, 2025 - CVE-2025-8901 published to NVD
• September 26, 2025 - Last updated in NVD database

Technical Details for CVE-2025-8901

Vulnerability Analysis

This vulnerability is classified as CWE-787 (Out-of-bounds Write), a memory corruption issue where the application writes data past the end or before the beginning of the intended buffer. In the context of the ANGLE graphics layer, this flaw occurs during the processing of specially crafted WebGL or graphics content embedded in HTML pages.

ANGLE is responsible for translating OpenGL ES calls to the underlying graphics API of the host operating system (Direct3D on Windows, Metal on macOS, and native OpenGL on Linux). The out-of-bounds write condition can be triggered when malformed graphics commands cause the translation layer to write beyond allocated memory boundaries.

The vulnerability requires user interaction—specifically, the victim must navigate to a malicious webpage containing the crafted exploit payload. Once triggered, the attacker gains the ability to corrupt adjacent memory structures, potentially hijacking program control flow.

Root Cause

The root cause of CVE-2025-8901 lies in insufficient bounds checking within the ANGLE component when processing certain graphics operations. When handling specific OpenGL ES commands or shader compilations, the code fails to properly validate array indices or buffer sizes, allowing write operations to exceed allocated memory regions. This lack of proper boundary validation enables attackers to craft malicious content that exploits the memory corruption.

Attack Vector

The attack vector is network-based, requiring the attacker to host or inject malicious content into a webpage. The exploitation flow involves:

1. Attacker creates a malicious HTML page containing crafted WebGL or graphics content
2. Victim is lured to visit the malicious page (via phishing, malvertising, or compromised websites)
3. Chrome's ANGLE component processes the malicious graphics commands
4. The out-of-bounds write occurs, corrupting memory beyond intended boundaries
5. Attacker potentially achieves code execution within the Chrome renderer process

The vulnerability manifests during ANGLE's shader compilation or geometry processing routines. For detailed technical analysis, refer to the Chromium Issue Tracker Entry associated with this vulnerability.

Detection Methods for CVE-2025-8901

Indicators of Compromise

• Unexpected Chrome renderer process crashes with memory corruption signatures
• Anomalous WebGL or graphics API calls in browser logs
• Suspicious HTML pages containing obfuscated WebGL shader code or canvas operations
• Memory access violation exceptions in ANGLE-related modules (libGLESv2.dll, libEGL.dll)

Detection Strategies

• Monitor for Chrome crash reports indicating ANGLE or graphics-related memory violations
• Implement network-level inspection for known exploit patterns in HTML/JavaScript payloads
• Deploy endpoint detection rules to identify unusual Chrome renderer behavior or unexpected child process spawning
• Utilize browser telemetry to track anomalous WebGL context creation patterns

Monitoring Recommendations

• Enable enhanced crash reporting in enterprise Chrome deployments to capture detailed stack traces
• Configure SentinelOne to monitor for suspicious browser process behavior and memory corruption indicators
• Implement web filtering to block access to known malicious domains serving exploit content
• Review Chrome extension activity for unauthorized graphics API usage

How to Mitigate CVE-2025-8901

Immediate Actions Required

• Update Google Chrome to version 139.0.7258.127 or later immediately across all systems
• Verify auto-update functionality is enabled on all managed Chrome installations
• Audit enterprise environments for outdated Chrome versions using asset management tools
• Consider implementing browser isolation for high-risk users until patching is complete

Patch Information

Google has addressed this vulnerability in Chrome version 139.0.7258.127. The fix includes enhanced bounds checking within the ANGLE graphics layer to prevent out-of-bounds write conditions. Organizations should prioritize deployment of this update given the potential for remote code execution.

For official patch details, see the Google Chrome Stable Channel Update.

Workarounds

• Disable WebGL in Chrome via chrome://flags or enterprise policy (WebGLAllowlistEnabled) as a temporary measure
• Implement strict content security policies to limit WebGL usage to trusted domains only
• Use network-level filtering to block access to untrusted websites serving complex graphics content
• Consider deploying Chrome in headless or restricted mode for high-security environments until patching is feasible

# Enterprise Chrome policy to disable WebGL (temporary workaround)
# Add to Chrome policy template or registry
# Windows Registry Path: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome
# Value Name: WebGLAllowlistEnabled
# Value Type: REG_DWORD
# Value Data: 0

# Linux/macOS managed preferences
# /etc/opt/chrome/policies/managed/disable_webgl.json
{
  "WebGLAllowlistEnabled": false
}