CVE-2026-10883: Type Confusion in Chrome ANGLE Graphics Library

Technical summary

CVE-2026-10883 is a type confusion vulnerability (CWE-787: Out-of-bounds Write) located in ANGLE, Chrome's cross-platform graphics abstraction layer. Type confusion occurs when the renderer misinterprets the type of an object in memory, allowing an attacker to write data to unintended locations on the heap. A remote attacker crafting a malicious HTML page can trigger this condition, leading to heap corruption. The vulnerability is reachable via the network and requires only user interaction—no special privileges needed. Chromium assessed this as Critical severity; the CVSS 3.1 score of 8.8 reflects high impact across confidentiality, integrity, and availability.

Business impact

Exploitation could enable attackers to execute arbitrary code in the context of the user's browser, stealing sensitive data (credentials, personal information), altering browsing activity, or installing malware. Given Chrome's ubiquity in enterprise and consumer environments, widespread exploitation could lead to credential compromise, lateral movement into corporate networks, data theft, and reputational damage. Automated attack delivery via compromised websites or targeted phishing increases risk.

Affected systems

Google Chrome versions prior to 149.0.7827.53 are vulnerable. The vulnerability also affects downstream systems that bundle or depend on ANGLE: Apple macOS (via Chrome on macOS), Linux systems running Chrome, and Microsoft Windows systems running Chrome. Any platform running an unpatched Chrome browser is at risk.

Exploitability

The vulnerability requires network access and user interaction—a victim must visit or be directed to a malicious web page. There is no authentication requirement. While this creates a dependency on social engineering or drive-by compromise, the low attack complexity and high likelihood of users following links make this a practical threat. The vulnerability has not been added to the CISA Known Exploited Vulnerabilities catalog at this time, but the low barrier to exploitation and high impact suggest it warrants rapid patching regardless of exploit availability.

Remediation

Update Google Chrome to version 149.0.7827.53 or later immediately. Chrome's auto-update mechanism will deliver the patch automatically on the next restart, but users can manually check Settings > About to force immediate update. Verify the version number post-restart. For organizations managing Chrome deployments, push the update through your device management or endpoint protection platform without delay.

Patch guidance

Google Chrome should automatically update to 149.0.7827.53 or later. Users can verify the installed version at chrome://version/. After patching, restart the browser to ensure the new version is active. Organizations using Chrome enterprise deployments should verify patch rollout through their MDM console or GPO reporting. No interim workarounds exist; patching is the only mitigation.

Detection guidance

Monitor for Chrome crashes or unexpected memory exceptions in renderer processes, which may indicate exploitation attempts. Web proxies and network monitoring can look for HTTP traffic to known malware hosting or phishing infrastructure delivering exploit HTML. Endpoint detection tools should alert on unusual child process creation from chrome.exe, code injection attempts, or file write activity to sensitive directories. Check browser history and extensions for suspicious installation. Organizations with access to crash logs should correlate renderer crashes with the timeline of this vulnerability's public disclosure.

Why prioritize this

Despite the CVSS score of 8.8 and Critical Chromium severity, prioritization depends on your risk tolerance and threat model. This vulnerability is high-impact but requires user interaction, reducing the 'spray and pray' risk. However, targeted campaigns against specific users or organizations are realistic. If your users frequently visit untrusted websites or are targets of spear-phishing, treat this as urgent. For most organizations, this merits same-day or next-day patching. The lack of KEV catalog inclusion does not lower urgency—it reflects only that public exploitation has not been reported, not that risk is low.

Risk score, explained

The CVSS 3.1 score of 8.8 (HIGH) reflects a network-accessible, low-complexity attack surface with high impact to confidentiality, integrity, and availability. The score accounts for required user interaction (reducing from CRITICAL to HIGH). However, Chromium's internal assessment of 'Critical' signals that the underlying code execution risk is severe; the CVSS penalty for user interaction is appropriate but should not be misinterpreted as 'low risk.' The attack vector (network) and lack of privilege requirement amplify practical exploitability.

Frequently asked questions