Description

Integer overflow in V8 in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-06T22:16:59.927Z",
  "pubdate": "2026-08-06T22:16:59.927Z",
  "executiveSummary": "An integer overflow vulnerability has been identified within the V8 engine of Google Chrome prior to version 151.0.7922.109.\nThis security flaw allows a remote, unauthenticated attacker to execute arbitrary code within the confines of the browser sandbox via a specially crafted HTML page.\nThe vulnerability represents a high-severity security risk, as successful exploitation compromises the integrity and execution context of the rendering engine.\nAttacker capabilities are limited initially by the browser sandbox architecture, yet achieving arbitrary code execution inside this boundary poses significant risks to client-side security.\nExploitation requires minimal interaction, typically involving a victim navigating to a malicious web page controlled by the attacker.\nImmediate remediation involves updating Google Chrome to the patched version 151.0.7922.109 or later to eliminate the underlying integer overflow condition.",
  "technicalDetails": "The vulnerability resides in the V8 JavaScript and WebAssembly engine utilized by Google Chrome.\nThe root cause stems from an integer overflow condition during arithmetic operations within the engine's memory management or compilation pipeline.\nWhen processing malformed or crafted input provided via a malicious HTML page, the integer overflow triggers improper memory allocation or buffer bounds calculation.\nThis calculation error can lead to heap corruption or out-of-bounds memory access primitives within the V8 heap space.\nThe attack flow begins when a user navigates to a remote web page hosting the exploit payload.\nUpon rendering the page, the browser parses the malicious JavaScript or WebAssembly constructs, invoking the vulnerable V8 code path.\nThe integer overflow occurs during internal type or size calculations, allowing the attacker to manipulate heap structures.\nBy chaining this memory corruption primitive, the attacker achieves arbitrary code execution.\nDue to the robust architecture of Google Chrome, the initial execution is constrained within the isolated renderer process sandbox.\nNo authentication or elevated privileges are required to exploit this vulnerability, relying solely on network exposure via web browsing.\nPost-exploitation impact within the sandbox depends on further sandbox escape vulnerabilities, but sandbox execution alone permits unauthorized access to site data and DOM manipulation."
}