CVE-2025-10892: Google Chrome V8 RCE Vulnerability

CVE-2025-10892 Overview

CVE-2025-10892 is an integer overflow vulnerability in the V8 JavaScript engine used by Google Chrome before version 140.0.7339.207. A remote attacker can trigger heap corruption by serving a crafted HTML page to a victim who visits it. Successful exploitation provides high impact on confidentiality, integrity, and availability of the affected browser process. The flaw is tracked under CWE-190 (Integer Overflow or Wraparound) and CWE-472. Google rated the underlying Chromium issue as High severity in the Stable Channel Update advisory.

Critical Impact
A crafted HTML page can trigger heap corruption in V8, enabling potential remote code execution in the renderer process across Windows, macOS, and Linux.

Affected Products

Google Chrome versions prior to 140.0.7339.207
Chromium-based browsers on Windows, macOS, and Linux
V8 JavaScript engine integrated within affected Chrome builds

Discovery Timeline

2025-09-24 - CVE-2025-10892 published to NVD
2025-09-25 - Last updated in NVD database

Technical Details for CVE-2025-10892

Vulnerability Analysis

The vulnerability resides in V8, the JavaScript and WebAssembly engine that powers Chrome. An integer overflow during value or size computations leads to undersized allocations or out-of-bounds memory access on the V8 heap. Attackers craft JavaScript embedded in an HTML page to manipulate internal counters or length fields until arithmetic wraps. The resulting heap corruption can be shaped to overwrite adjacent objects, function pointers, or JIT-allocated structures. From there, an attacker can pivot to type confusion or arbitrary read/write primitives within the renderer process.

Exploitation requires user interaction, specifically navigating to the attacker-controlled page. No prior authentication or elevated privileges are required on the target system. The Chromium team classified the underlying issue with High severity, consistent with renderer-level memory corruption bugs that historically chain with sandbox escapes.

Root Cause

The root cause is improper validation of integer arithmetic in V8 code paths that compute buffer sizes or element indices. When operands exceed expected bounds, the resulting wraparound produces values that bypass subsequent bounds checks. Allocations or accesses based on these tainted values corrupt the heap. The Chromium issue tracker entry 444048019 is restricted pending broad patch deployment.

Attack Vector

The attack vector is network-based through standard web browsing. An attacker hosts malicious HTML and JavaScript on a controlled domain or injects it into compromised sites and advertising networks. When a user with a vulnerable Chrome build visits the page, V8 parses and executes the crafted JavaScript. The integer overflow triggers heap corruption that the attacker uses to gain code execution in the renderer.

No verified public proof-of-concept code is available for this CVE. See the Chromium Issue Tracker entry and the Chrome Stable Channel Update for vendor details.

Detection Methods for CVE-2025-10892

Indicators of Compromise

Chrome renderer process crashes (chrome.exe --type=renderer) with heap corruption signatures shortly after visiting unfamiliar pages
Unexpected child processes spawned from Chrome, particularly shell interpreters or LOLBins
Outbound connections from Chrome to newly registered domains or non-standard ports following web navigation
Browser telemetry showing Chrome version older than 140.0.7339.207 in the environment

Detection Strategies

Inventory installed Chrome versions across managed endpoints and flag any build prior to 140.0.7339.207
Monitor EDR telemetry for anomalous process trees originating from Chrome renderer processes
Inspect web proxy logs for repeated visits to low-reputation domains delivering large or obfuscated JavaScript payloads
Correlate browser crash dumps with V8 stack frames such as v8::internal:: allocator routines

Monitoring Recommendations

Centralize Chrome crash reporting and alert on V8 heap corruption faults
Track Chrome auto-update status to confirm endpoints receive the patched build
Enable DNS and TLS logging to identify malicious landing pages hosting the exploit
Alert on Chrome renderer processes executing unusual child binaries or writing to user profile directories

How to Mitigate CVE-2025-10892

Immediate Actions Required

Update Google Chrome to version 140.0.7339.207 or later on all managed Windows, macOS, and Linux endpoints
Verify auto-update is enabled and not blocked by network policy or proxy restrictions
Restart Chrome on all endpoints to ensure the patched binary is loaded after update
Audit Chromium-based browsers (Edge, Brave, Opera, Vivaldi) and apply vendor updates that pull in the upstream V8 fix

Patch Information

Google released the fix in the Chrome Stable channel as version 140.0.7339.207 for desktop. See the Google Chrome Stable Channel Update for full release notes and platform-specific builds.

Workarounds

Restrict JavaScript execution on untrusted sites using enterprise policy DefaultJavaScriptSetting until patching completes
Deploy site isolation and ensure --site-per-process remains enabled to limit renderer compromise scope
Route browsing through web proxies with TLS inspection and known-bad domain blocking
Educate users to avoid clicking unsolicited links until patch deployment is verified across the fleet

bash

# Verify installed Chrome version on Linux/macOS endpoints
google-chrome --version
# Expected output: Google Chrome 140.0.7339.207 or higher

# Windows PowerShell check
(Get-Item "$env:ProgramFiles\Google\Chrome\Application\chrome.exe").VersionInfo.ProductVersion