CVE-2026-14430: Chrome V8 Integer Overflow Remote Code Execution (CVSS 8.8)

Technical summary

CVE-2026-14430 is an integer overflow vulnerability in V8, Chrome's JavaScript execution engine. An integer overflow occurs when arithmetic operations produce values too large to fit in their intended data type, causing wraparound and memory corruption. In this case, a remote attacker can craft HTML/JavaScript that triggers the overflow condition, leading to arbitrary code execution within the Chrome sandbox process. The vulnerability requires minimal attack surface (network-accessible, low attack complexity) and no authentication or special user privileges beyond visiting a webpage, though it does depend on user interaction (UI required).

Business impact

This vulnerability poses a direct risk to enterprise and consumer users who rely on Chrome for web browsing. A successful exploit could allow attackers to steal browser data (passwords, cookies, session tokens), deploy malware, or establish persistent access to a user's system. Organizations with BYOD policies, remote workers, or those relying on Chrome for web applications should prioritize patching. The high CVSS score (8.8) and ease of delivery via a simple webpage make this an attractive vector for targeted and opportunistic campaigns.

Affected systems

Google Chrome versions prior to 150.0.7871.46 are vulnerable. This includes all releases of Chrome on Windows, macOS, Linux, Android, and iOS that have not been updated to version 150.0.7871.46 or later. Organizations should inventory Chrome deployments (both managed and unmanaged) to assess exposure. Chrome auto-updates on most platforms, but verification of deployment success is recommended for enterprise environments.

Exploitability

Exploitability is high in practical terms: the attack requires no special network position, no authentication, and no user privilege escalation—only that a user visit or be redirected to a malicious webpage. The attack surface is the entire internet. However, user interaction is required (visiting a site), which is a minor friction point. No public exploit code is documented in the provided data, but the relative simplicity of integer overflow vulnerabilities and Chrome's high visibility make weaponization likely if not already underway.

Remediation

Update Google Chrome to version 150.0.7871.46 or later immediately. Chrome's auto-update mechanism should deploy this patch automatically on most systems within hours, but administrators should verify completion in managed environments. Users can manually check for updates via Chrome menu > Settings > About > Google Chrome, which triggers a check and restart if needed. For organizations managing Chrome through enterprise policies, confirm that auto-update policies are enabled and monitor patch deployment metrics.

Patch guidance

Verify that all Chrome installations in your environment are running version 150.0.7871.46 or later. On Windows, macOS, and Linux, users can navigate to chrome://settings/help to check and install updates. For Chromebook, Android, and iOS devices, ensure system auto-update is enabled. Enterprise administrators should use Chrome's enterprise policy tools (via Admin Console for Workspace, or local Group Policy for Windows) to force update compliance. Test the update in a non-production environment first if your organization requires change management approval. The patch should be deployed within 48 hours given the high severity and ease of exploitation.

Detection guidance

Endpoint detection should focus on: (1) Chrome process crashes or unexpected terminations preceded by JavaScript execution, (2) unusual Chrome subprocess activity or memory allocation spikes, (3) network traffic to known malicious domains from Chrome processes, and (4) suspicious file creation or process spawning from Chrome sandboxed processes. Host-based behavioral monitoring for arithmetic overflow patterns in V8 is not practical for most organizations; focus instead on post-exploitation indicators such as credential theft, data exfiltration, or command-and-control callbacks. Web traffic inspection tools should note visits to known malicious or suspicious sites.

Why prioritize this

This vulnerability ranks as critical for immediate remediation due to its high CVSS score (8.8), ease of exploitation (network-based, no authentication), and the ubiquity of Chrome in both consumer and enterprise environments. The attack vector is low-friction (a simple webpage), making it suitable for mass campaigns or targeted spear-phishing. The combination of high impact (confidentiality, integrity, and availability all rated High) and low barriers to attack justifies treating this as a priority-one patch. Organizations should treat this similarly to critical browser vulnerabilities in Internet Explorer or Firefox.

Risk score, explained

The CVSS v3.1 score of 8.8 (HIGH severity) reflects: Attack Vector = Network (AV:N), meaning the flaw is exploitable remotely with no special access; Attack Complexity = Low (AC:L), indicating a straightforward exploit path; Privileges Required = None (PR:N), requiring no prior authentication or elevated access; User Interaction = Required (UI:R), necessitating that a user visits a malicious page; Scope = Unchanged (S:U), meaning the impact is limited to the vulnerable Chrome process; and all impact metrics (Confidentiality, Integrity, Availability) rated High (C:H, I:H, A:H), reflecting potential theft of sensitive data, code execution, and denial of service. The score does not account for sandbox escapes, which would further elevate risk; assume this could lead to full system compromise in a real attack scenario.

Frequently asked questions