Description

Inappropriate implementation 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": "2026-08-06T22:16:57.223Z",
  "pubdate": "2026-08-06T22:16:57.223Z",
  "executiveSummary": "An inappropriate implementation vulnerability exists within the V8 component of Google Chrome, specifically affecting versions prior to 151.0.7922.109. This high-severity security flaw allows a remote attacker to execute arbitrary code inside the V8 security sandbox via a maliciously crafted HTML page.\nThe vulnerability poses significant risk to end-users as successful exploitation compromises the integrity of the browser's sandboxing mechanisms. The attacker's capabilities are leveraged through standard web navigation, requiring the user to load a crafted web page, which introduces potential for further system interaction or security boundary circumvention within the context of the rendering engine.\nThe risk implications involve memory corruption or unauthorized code execution primitives within the restricted V8 runtime environment. Mitigation relies strictly on updating the affected software to the patched version provided by the vendor.",
  "technicalDetails": "The vulnerability resides in the V8 JavaScript and WebAssembly engine utilized by Google Chrome, specifically prior to version 151.0.7922.109. The root cause stems from an inappropriate implementation flaw within the engine's internal logic, which improperly handles specific edge cases during execution or memory management.\nExploitation of this vulnerability requires a remote attacker to deliver a crafted HTML page containing malicious JavaScript or WebAssembly payloads designed to target the flawed component. Network exposure is present whenever a user navigates to an untrusted web page or interacts with compromised web content.\nThe step-by-step attack flow begins when the victim's browser loads the crafted HTML page. The V8 engine parses and executes the malicious script, triggering the inappropriate implementation defect. This flaw leads to improper state management or memory corruption within the V8 sandbox boundaries.\nAuthentication and elevated local privileges are not required for exploitation, as the attack vector is entirely remote via standard web content processing. The payload behavior results in arbitrary code execution within the confines of the V8 sandbox, bypassing intended engine security controls.\nThe post-exploitation impact includes potential manipulation of heap data, unauthorized execution of arbitrary instructions within the sandbox context, and an increased risk of chaining this vulnerability with additional flaws to achieve broader escape or system compromise."
}