CVE-2026-10987: Chrome V8 Integer Overflow RCE Vulnerability – Patch Now

Technical summary

CVE-2026-10987 is an integer overflow vulnerability in the V8 JavaScript engine bundled with Google Chrome. The flaw enables remote code execution (RCE) within the Chrome sandbox process, meaning arbitrary code runs with the privileges of that isolated process rather than the user's full system. The vulnerability stems from improper integer handling that allows crafted JavaScript to trigger memory corruption. Exploitation requires user interaction—specifically, visiting a malicious HTML page—but no authentication or special browser configuration is needed. The attack surface is the web itself: any site an attacker controls or compromises can serve the exploit payload.

Business impact

Successful exploitation could lead to theft of sensitive data accessible to the Chrome process, lateral movement to other browser processes or system resources, or denial of service. Because the attack requires only user interaction with a malicious webpage, it poses significant risk to any organization where employees browse the internet. Targeted attacks against specific users or watering-hole attacks against corporate intranet sites represent realistic threat scenarios. Attackers may harvest credentials, inject malware, or pivot to internal systems.

Affected systems

Google Chrome is the primary affected product. Because Chromium is the underlying engine used in multiple platforms, the vulnerability also affects systems running Chrome on Windows, macOS, and Linux. Other Chromium-based browsers may be similarly vulnerable depending on their V8 version and update status; verify with individual browser vendors. The vulnerability was designated with Chromium security severity as High, indicating Google's own risk assessment aligns with the CVSS 8.8 rating.

Exploitability

Exploitability is straightforward: an attacker crafts an HTML page containing malicious JavaScript that triggers the integer overflow in V8, then distributes the page via email, advertisement, social engineering, or direct site compromise. User interaction is required—the victim must visit the malicious page—but this is a low bar in real-world attacks. No exploit code is publicly associated with this CVE at the time of analysis, but the attack complexity is low (AC:L), meaning reliable exploitation is feasible once techniques are known. The CVSS vector reflects remote delivery (AV:N), no privilege requirement (PR:N), and significant impact (confidentiality, integrity, availability all rated High).

Remediation

Update Google Chrome to version 149.0.7827.53 or later immediately. Chrome's built-in update mechanism typically handles this automatically, but users should verify they are running the patched version by navigating to chrome://help or checking Settings > About Chrome. Administrators in enterprise environments should enforce this update via group policy or mobile device management tools. Users of Chromium-based browsers (Edge, Brave, Opera, etc.) should check those vendors' release notes and apply equivalent updates.

Patch guidance

Google Chrome auto-updates are enabled by default and should deliver version 149.0.7827.53 within days of its release. To manually verify and force an update: (1) Open Chrome, (2) Click the three-dot menu > Help > About Google Chrome, (3) Chrome will check for updates and install if available, requiring a restart. Enterprise administrators should verify deployment through their update management systems and confirm all instances have reported successful installation. For Chromium-based browsers, consult the respective vendor's advisory and update channels to confirm patch availability and version numbers specific to each product.

Detection guidance

Monitor for Chrome version numbers below 149.0.7827.53 in your environment using endpoint detection and response (EDR) tools, mobile device management (MDM) platforms, or asset inventory systems. Look for user reports of unexpected browser crashes or freezes after visiting unfamiliar websites, as exploitation may trigger crashes before sandbox escape. Review web proxy or firewall logs for suspicious access patterns if you suspect targeted attack campaigns. Intrusion detection signatures may not be mature for this vulnerability early post-disclosure; focus on behavioral indicators (unexpected child processes, memory corruption events) rather than network signatures.

Why prioritize this

This vulnerability scores 8.8 CVSS High and warrants immediate patching. It enables remote code execution via a common user action (visiting a webpage), affects a ubiquitous application, and requires no privileged access or complex setup. While the sandbox limits blast radius, attackers regularly find ways to escape sandboxes or chain this with other vulnerabilities. The combination of high severity, low attack complexity, and broad user exposure makes this a top-tier priority for patch deployment.

Risk score, explained

The CVSS 3.1 score of 8.8 reflects: (1) Network-based attack vector (AV:N)—exploitation occurs over the internet, (2) Low attack complexity (AC:L)—no special conditions or knowledge required beyond crafting the malicious page, (3) No privilege requirement (PR:N)—attacker needs no authentication or browser permissions, (4) User interaction required (UI:R)—victim must visit the page, which slightly lowers the score but is easily achieved through social engineering, (5) Unchanged scope (S:U)—impact is confined to the Chrome sandbox, and (6) High impact across confidentiality, integrity, and availability (C:H/I:H/A:H)—code execution allows data theft, system modification, or crash. The High severity classification is appropriate and aligns with Chromium's own severity assessment.

Frequently asked questions