CVE-2026-16418
Summary
by MITRE • 07/22/2026
Stack buffer overflow in V8 in Google Chrome prior to 150.0.7871.182 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability represents a critical stack buffer overflow within the V8 JavaScript engine used by Google Chrome, which prior to version 150.0.7871.182 exposed users to remote code execution attacks. The flaw originated from insufficient bounds checking during JavaScript object manipulation, specifically when handling certain array operations and memory allocations that led to unauthorized memory access patterns. Attackers could craft malicious HTML pages containing specially designed JavaScript code that would trigger the buffer overflow condition when processed by the vulnerable V8 engine.
The technical implementation of this vulnerability falls under CWE-121 Stack-based Buffer Overflow, where insufficient validation allows an attacker to overwrite adjacent stack memory locations. The attack vector exploited the sandbox isolation mechanisms within Chrome's architecture, demonstrating how memory corruption flaws can bypass security boundaries designed to contain malicious code execution. This particular flaw was classified as High severity by Chromium security teams due to its remote exploitability and the ability to execute arbitrary code with the privileges of the sandboxed process.
The operational impact of this vulnerability extended beyond simple privilege escalation, as it represented a significant bypass of Chrome's security model that included process isolation, memory protection, and sandboxing controls. Remote attackers could leverage this flaw through web-based attacks without requiring user interaction beyond visiting a malicious website, making it particularly dangerous in enterprise environments where users might encounter compromised content. The vulnerability demonstrated weaknesses in the V8 engine's memory management subsystem and highlighted the challenges of maintaining secure JavaScript execution environments that must balance performance with safety.
Mitigation strategies for this vulnerability required immediate patching of Chrome browsers to versions 150.0.7871.182 or later, which included stack canary implementations, improved bounds checking, and enhanced memory allocation validation within the V8 JavaScript engine. Organizations should have implemented network-level protections such as content filtering and web application firewalls to block access to known malicious domains until patching could be completed. The incident underscored the importance of maintaining up-to-date browser security patches and implementing layered defense strategies that include both endpoint protection and network-based monitoring for suspicious web traffic patterns. This vulnerability aligns with ATT&CK technique T1059.007 for JavaScript execution and T1203 for exploitation of memory corruption vulnerabilities, demonstrating the intersection of browser-based attack surfaces with modern exploit frameworks.